IMAGE EVALUATION TEST TARGET (MT-3) 1.0 I.I 11.25 • 50 ""^^ 111^ Ki tii us Ki Hi 2.2 2.0 III 1.4 18 1.6 V] <^ ^:5 7 Photographic Sciences Corporation 33 WEST MAIN STREET WEBSTER, N.Y. 14S80 (716)872-4503 ^ [V <* ^\ o CIHM/ICMH Microfiche Series. CIHIVI/ICIVIH Collection de microfiches. Canadian Institute for Historical Mif-roreproductions / Institut Canadian de microreproductions historiques Technical and Bibliographic Notat/Notes techniques et bibliographiques The Institute has attempted to obtain the best original copy available for filming. Features of this copy which may be bibliographically unique, which may alter any of the images in the reproduction, or which may significantly change the usual method of filming, are checked below. D D D D D D D D Coloured covers/ Couverture de couleur I I Covers damaged/ Couverture endommagAe Covers restored and/or laminated/ Couverture restaurie et/ou pelliculAe I I Cover title missing/ Le titre de couverture manque Coloured mnps/ Cartes g6ographiques en couleur Coloured init (i.e. other than blue or black)/ Encre de couleur (i.e. autre que bleue ou noire) I I Coloured plates and/or illustrations/ Planches et/ou illustrations en couleur Bound with other material/ Reiii avec d'autres documents Tight binding may cause shadows or distortion along interior margin/ La re liure serrie peut causer de I'ombre ou de la distortion le long de la marge intirieure Blank leaves added during restoration may appear within the text. Whenever possible, these have been omitted from filming/ II se peut que certaines pages blanches ajout6es lors d'une restauration apparaissent dans le texte, mais, lorsque cela itait possible, ces pages n'ont pas iti filmies. Additional comments:/ Commentaires supplimentaires; L'Institut a microfilm^ le meilleur exemplaire qu'il lui a M possible de se procurer. Les details de cet exemplaire qui sont peut-Atre uniques du point de vue bibliographique. qui peuvent modifier une image reproduite, ou qui peuvent exiger une modification dans la m6thode normale de filmage sont indiquAs ci-dessous. The toth I I Coloured pages/ Pages de couleur Pages damaged/ Pages endommagies Pages restored and/oi Pages restauries et/ou pelliculies Pages discoloured, stained or foxei Pages dicolordes, tachetdes ou piquies I I Pages damaged/ I I Pages restored and/or laminated/ FyK Pages discoloured, stained or foxed/ The posi of tl filml Orig begl the sion othfl first sion or HI □ Pages detached/ Pages d^itachics r~3^Showt;>»rough/ I — I Transparence I I Quality of print varies/ Quality indgale de I'impression Includes supplementary material/ Comprend du materiel supplimentaire Only edition available/ Seule Edition disponible D Pages wholly or pertially obscured by errata slips, tissues, etc.. have been refilmed to ensure the best possible image/ Les pages totalement ou partiellement obscurcies par un feuillet d'errata, una pelure, etc., ont 6ti filmies i nouveau de fapon A obtenir la meilleure image possible. The shai TINI whi< Ma; diffi enti beg righ reqi mml This item is filmed at the reduction ratio checks below/ Ce document est film6 au taux de reduction indiquA ci-dessous. 10X 14X 18X 22X 26X 3i)X y 12X 16X 20X a4X 28X 32X • Th« copy filmed h«re ha* b««n raproducad thanka to tha ganaroaity of: Metropolitan Toronto Library Science & Technology Department Tha imagaa appaaring hara ara tha baat quality poasibia conaidaring tha condition and iagibility of tha original copy and in Icaaping with tha filming contract spacif Icationa. Original copiaa in printad papar covara ara filmad beginning with tha front covar and anding on tha laat paga with a printad or illuatratad impraa- aion. or tha back covar whan appropriata. Ail othar original copiaa ara filmad baginning on tha firat paga with a printad or illuatratad Impraa- aion, and anding on tha laat paga with a printad or illuatratad impraaaion. Tha laat racordad frama orvaach microficha ahall contain tha symbol -^ (moaning "CON- TINUED"), or tha symbol ▼ (moaning "END"), whichavar applias. Mapa, plataa. charts, ate, may ba filmad at diffarant reduction ratioa. Thoaa too larga to ba entirely included in one expoaura are filmed beginning in the upper left hand corner, left to right and top to bottom, aa many framea aa required. The following diagrams illustrate the method: 1 2 3 L'exemplaire film* fut reproduit grica A la g^nArositA da: Metropolitan Toronto Library Science & Technology Department Les images suivantas ont it* rapfoduitas avac la plus grand soin. compta tanu da la condition at da la nattet* do I'exemplaira film*, at an conformity avac las conditions du contrat da fllmage. Lea axempiairea originaux dont la couvarture an papier eat imprimte sont fiimAs an commandant par la premier plat at an tarminant soit par la darnlAre page qui comporte une emprainta d'impraaaion ou d'iliuatration, soit par la second plat, salon le caa. Toua lea autras axamplairas originaux aont fllmis an commen^ant par la pramlAre page qui comporte une empreintr: d'impresslon ou d'illustration at an tarminant par la darniAre page qui comporte une telle empreinte. Un des symboles suivants apparaftra sur la darniire image do cheque microfiche, selon le ces: le symbols — ^ signifie "A SUIVRE", la symbole y signifie "FIN". Les cartea, planches, tableaux, etc.. peuvent Atre filmis A des taux da rMuction diffirants. Lorsqua le document est trop grand pour Atra reproduit en un soul clichA, il est film* A partir da Tangle suptrieur gauche, do gauchs k droite. et de haut en bas, an prenant le nombre d'imagea nAcessaire. ilea diagrammas suivants illustrant la mithoda. 1 2 3 4 5 6 DIATOMACE^ n ot NORTH AMERICA, ILLUSTRATED WITH TWENTY-THREE HUNDRED FIGURES PROM THE AUTHOR'S DRAWINGS ON ONE HUNDRED AND TWELVE PLATES. BY THE REV. FRANCIS WOLLE, Authirr of " Desmids of the United States;" "Fresh Water Algip of the United States.' BETHLEHEM, PA.: THE COMENIUS PRESS, 1890. ^% '^^ V 1' 1 '^6 Profeseor ^. £. Smith, OF HOBART COLI.KOE, GENEVA, N. Y. THIS WORK IS iHebicateb WITH GREAT RESPECT AND ESTEEM BY HIS GRATEFUL FRIEND, THE AUTHOR. -' I 4 PREFACE. THE Diiitoms liave perhaps been more thoroughly studied than the other Algie, e8i)eciaUy within the past fifty years. Among the noted investigators of American Diatoms was Dr. G. C. Ehrenberg, of Berlin, Germany, who in his several visits to this country, made careful explorations all the way from the Altantic to the Pacific coast. His labors resulted in his cele- brated work on Microgeologie or Microscopic Organisms (Diato- maceje) published 1854-5(), besides numerous short papers in the Journals of the Academy of the Natural Science of Berlin. Pre- vious to Ehrenberg's publications, Prof. J. N. Bailey, of West Point, N. Y., turned his attention to the Diatoms of the United States, and frequently contributed papers on this subject to the American Journal of Sciences and Arts (Siliman's Journal) New Haven. In IS.'iO the Smithsonian Institute published his Microscopical observations in South Carolina, Georgia and Florida. Somewhat later, A. M. Edwards published several papers on the United States Diatomacese ; and J. N. Lewis, M.D., contributed between 1861-65, notes on ''New and Barer Species of Diatoms of the United States Sea Board;" "On New and Singular Forms," etc. From this time contribu- tions to the literature of Diatoms became more numerous. One of the most valuable of them, appeared in The Lens, Chicago, 1872, by Prof. H. L. Smith, entitled "A Conspectus of the Families and Genera of the Diatomaceaj." Among other prom- inent investigators are Prof. J. D. Cox, of the Law School of Cincinnati, Dr. H. H. Chase, of Geneva, N. Y., and later of Michigan ; C. S. Peticola«, of Eichmond, Va., an industrious collector of the fossil Diatoms in his vicinity ; Massrs. Briggs and Thomas, of Chicago, whose names are associated with the local Diatomaceaj ; Kain, of Philadelphia, Pa., familiar with the forms about Atlantic City, N. J. ; Shultze, whose field is Staten Island and the neighborhood of New York City ; Vorce, of Cleveland, Ohio, Newcomer, of Indianapolis, Ind., M. A. Booth, Longmeadow, Mass., and many others, all of whom have ren- ▼I DIATOMACKJO <>F NORTH AMKKK'A. dered valuable service as collectors, as iirejiarers of specimens or as stiuleiitH of the structure, Imbits, growth and development of Diatoms. Among foreign writers who have described many North American forms are Ch. Stodder, who described the diatomii- ceous earth found at Randolph, Mass., Richmond, Va., and :it Santa Monica, Cal. ; B. K. Greville, F. Kitten, C. Janisch, L. Rabenhorst, A. Grunow and others are associated with specu>s found in western territories and waters from Vancouvers Sound and southward across the Continent to Campeachy Bay and the Gulf of Mexico. Upwards of oight thousand species of Diatoms are recorded in Chase's edition of Habirshaw's Catalogue of the Diatomacete of the world, 1888. Of these, less than two thousand are North American species, but the figures and descriptions of these are scattered through nmny and rare volumes of Journals of Scien- tific Societies, magazines, reports of expeditions, beside special works ; for which reason students find the literature of the Dia- toms very difficult and costly to obtain. In the present volume is collected the cream of what has been already written on the subject, as well as the figures of all known North American species together with the most approved system of classification. I follow the example of Dr. Adolph Schmidt in his AUaa der Biatomacean Kunde in letting the figures suffice for a description of the species. The Conspectus of the Families and Genera of the Diatomacete in this work, is that of Prof; H. L. Smith, of Hobart College, Geneva, N. Y., originally published in The Lena, January, 1872, and which Dr. H. Van Heurck has also adopted in his Synopsis der Diatomees de Belgique, a few subdivisions of genera being added. I gratefully acknowledged the very valuable assistance freely extended to me by that veteran authority. Prof. H. L. Smith, to whom I submitted the plates of this work prior to their being photolithographed, I am also greatly indebted to Dr. H. H. Chase, of Michigan, through personal correspondence and his invaluable catalogue of the Diatomaceae of the world. Nor can I omit to mention Prof. J. D. Cox, of Cincinnati, Ohio, B. N. Thomas, of Chicago, or Kain, of Philadelphia, Pa., all willing friends in time of need. 1 BIBLIOGRAPHY, OH ABUBEVIATIONS OF NAMES OF AUTHORS AND THEIR WORKS CON- SULTED IN PREPARING THIS PONOGRAPH. A. J. M.— American Journal of Microscopy, N. Y., 1876-1880. A. Q. J. M.— American Quarterly Journal of Microscopy, N. Y., 1878-1879. Bail. Sound. — Microscopic Examination of Soundings made by U. S. Atlantic Coaet Survey, J. W. Bailey, Washington, 1851. Bail. N. Sp. — Notes on New Species of Microscopic Organisms, J. W. Bailey, M. D, Washington, 1854. Bail. M. O. — Micro-observations in South Carolina, Georgia and Florida, J. W. Bailey, Washington, 1850. Bail, and Harv. — U. S. Exploring Expedition, 1838, 1842, under command of Ch. Wilkes, Philadelphia, 1862 (1874). B. J. N. H.— Boston Journal of Natural History. Bbeb. Alo. Fal. — Algues des environs de Falaise, par M. M. de Breb. et Oodey, 1855, CasxAAcane 1873-1876.— Exploring voyage of Challenger. Cleve. N. L. K. D — On some New and Little Known, D. R. 8. A., 1881, DoNKiN. B. D.— Natural History of British Diatoms, London, 1870. Edwards. — Sketch of Natural History of Diatomacese, Concord, N. H., 1874. E. Abh. — Ehrenberg in Abhandlungen der Konig. Academie der Wissenschaften zu Berlin, 1830, etc. E. Bbr.— Ehrenberg in Monats Berichten der K. A. der Wis. zn Berlin, E. Inf. — Die Infusions-Thierchen, von G, C. Ehrenberg, Leipsic, 1833. E. MiK. — Mikrogeologie von Ehrenberg, 1856. GiRARD. — Des Diats. fossils par J Girard, Paris, 1867. Etudes Sur Guano Comptes rends, 1868. Gregory W. — New forms of Diatomacese, British Association Reports, 1856. Grev. Cal. — Description of New Species and Varieties of Naviculae, etc., ob- served in California, Guano ; R. K. Greville, Edinburgh. New Phil. Journal, 1859. Grun. 1860. — Ueber neue oder ungeniigend gekannte Algen, von M. Grunow, Veih. K. K. Zool. Bot. Gesell. in Wien, 1860. ▼m niATOMAOK.I-; OF NORTH AMKKKJA. !f Heiii.— Con8[)ei'tUB Criticus Diatomacciirum, per F. A. IleilKtrg, ('o|>enliagen. 1862. Jan. Ouan. — Ziir Characterintic den GuanoH Abh'd. der iSi-hleiwh (JeBcl. von C. .laniHch, HreHlaii, 1861, 1862. Jan. and Kail— lleber Meeres Diatomeen v«n HonduraH, vonC. Janinoh and Dr. L. Kal>enlinrHt, 18()2. J. ti. C— Jour, of the Ciuekett Mic. Cliil), London, 1868. KiTTON.— (F.) Dintu' of Norfolk TranH. N. II. S.. of Norwich. 1875. K. R.— Die KipHi'lMcimliner Raiiilarien. F. T. KUt/.inu Nordhaiisen, 1844. Lkns.— The LeiiM, a (i.iarterly .Journal of Mic, Cliicauo, 1872, 187.3. Lkwis, N. and I. Forms — On Home new and Hinnuliir lntcrm«>diate ForniH of DiatH' hy F. VV. Lewis, I'roc. IMiila. Acad. Nat Sciences, 18«:{. Lkwh, N. and R. Sp. -Notes on new and rare H\). of Dialie from the V. S. Sea Hoard, F. W Lewis, I'hila., 18(11. Lewis, W., M.D — On extreme and exceptional variations of Dialu' in White Moinitains, F. W Lewis, IMiilndelphia .Academy of .'Science, ISS-'i. M.D.— Microftrapliic Diciioniiry, (iriflith 1''. llenfrey, Londcm, 1875. M. J. — Quarterly Journiil of Microscopic Science, London. M. M. J.--Monlhly Microscopic .Journui, London, 1869. NiTZ. — Beitra^ zur Infusorienkunde, von Dr. C. L. Nitzsch Halle, 1819. O. M. L D. — Repoit on the Irish Diatie by Rev. Eug. O'Meary. Proc. Royal Irish Academy. Vol. 2, 1^76. Petit, Liste.— Lisle des diatomees, etc , environs de Paris, Bot. f decomposition. They belong to both salt and fresh waters, though tlu^ deni/ens of the one are not to be found in the other. The marine fonus abound in the sea depths, in marslnvs which are tlooded at high tide, in shallow inlets and the muddy bottoms underlying the sandy surface of the seashore. The fresli water foiins are plentiful on the mossy stones of mountain stn^amlets, pools bordering rivulets, drip- ping ro(!k8, in ponds, creeks and rivers ; every sluggish stream has a bed of them of more or less thickness. Owing to tlieir indestructible covering, vast quantities of Diatoms have formed fossiliferous deposits in many States of the Union, notably Virginia. The city of Kichmoud it built upon such a deposit from twenty to eighty feet thick and several miles in extent ; the Church Hill tunnel was cut through it three <£uarter8 of a mile. The siliceous epiderm although characteristic of the Diato- maceo), is not without exceptions ; in a few it is wholly want- ing ; others develop it irregularly from almost nothing to nearly perfect silicitication. All living Diatoms possess a gelatinous envelope, which, owing to its transparency, can be readily detected only by means of coloring matter added to the surrounding fluid ; it is secreted by the Diatom and is necessary to its existence ; some- times it forms tulies or stalks or stipes which have misled observers into basing genera upon them ; nevertheless these are features which should not be ignored. The ends of these tubes, stalks or stipes attach themselves to stones, wood, and other adjacent objects to prevent the Diatom from being swept away by currents and waves. When the Dia- tom is about to propagate, the frustule is often immersed in large masses of this transparent gelatinus envelope. i X DIATOMAOEiE OF NORTH AMEKICA. STRUCTURE OF DIATOMS. In the pill- box-like siliceous structure of Diatoms, the top and bottom constitute the 'dives; the sides are known as the connecting membranes or situral zones and when detached are tcmed hoi,j>s; in some, the valves do not fold over but merely rest against each other edge on edge. The line of junction forms a suture, raph^ or median line along which the valves readily separate. H. L. Smith divides Diatoms into three groups according tc the presence or absence of this suture, viz., Raph- idie£e, Pseudo-Raphidieje and Crypto Raphi die®. The first has a distinctly true raph6 or median line which usually has median and terminal enlargements or nodules ; the second has no raph6 but a pseudo-median line without nodules or enlargements ; in both of these groups, the valves are much longer in the direc- tion of the raph6 or pseudo-raph^ and therefore are more or less bacillar. The third group has the raph6 concealed and the pseudo-raph6 absent, the valves circular, often angular and sometimes broadly elliptical. The raph6 is a true cleft which in the first group divides the valves equally and is supposed to be the means by which the contents of the frustule communicate with the outer world. In one or the other of these three groups, all known forms of the Diatom may be included. Besides the simple frustule and envelopes, diatoms often pre- sent hairs, horns or bristles which are usually siliceous. They are most abundant on group three, less so on group two and ae rarely found in group one. They are mostly marginal or sub- margiral, and are sufficiently persistent to have led to the nam- ing of genera and species in accordance with their presence or absence. The mere adherence of the frustules gives rise to what are termed filamentous forms ; thus, in group I we have Diadesmis, a genus founded alone on this characteristic ; FragUaria in group II is but an association of Si/n^drw in the form of a straight filament, and in group III Melosira is a straight filament of frustules no way different from OyclotUla or even Coscinodiscm except n cohering more or less firmly after the self division of the frustules. The typical forms of the tihree groups are regular in outline ; thus, a Navieula from group I is in sideview (the valve) moie or less inflated and rectangular in front ; the side view in Synedra of group II, presents straight, parallel margins, the ends drawn more or less together ; in the front view, however, the INTRODUCTION. XI margins are straight to the ends ; the side view of the Chadno- diaeiia in group III is circular and the front view rectangular. Though these serve as types, yet each group has many excep- tional forms; thus the sides of OymbeUa appear more or less swollen in a front view, while the side view shows one valve more swollen than the other. The frustules of Oomphonema are cuneate on side view and more or less irregularly swollen in front view. The frustules of Meridion and Bhipidophera are also cuneate in a greater or less degree. The absence of the raph6 or median line from one of the valves, is another departure from the normal form in group I. The frustule is then curved with the raph6 and central nodule, on the concave side (valve) a& in Achnanthea, Aehnanthidium and Cocconei8. The obliteration, partial or entire, of the central nodule as in Stauroneis, is another variation in group I. In pome of the Naviculese the median line is more or less sigmoid not straight ; of these, Grunow made the genus Scoliopleura; also, the Pleurosigma differ from the Naviculese in the sigmoid median line as well as in the sigmoid sides of the frustules. As a general rule, free forms belong to group I, the fiat fila- mentous to group II, the cylindrical and most of the irregular forms to group III. CONTENTS OF DIATOMS. The colored internal portions of a Diatom are for the same genus, usually arranged in the same manner. Any departure therefrom, is accompanied by differences in the build of the frustule ; for which reason, microscopists have been disposed to classify Diatoms agreeably to the arrangement of the endo- chrome ; which, however, has nothing to commend it especially as regards the immense masses of fossil Diatoms which can be described only by their frustules. The contents of the Diatom are enclosed in a membrane that is firmly attached to the frustule, and possesses a higher vitality than the external membrane ; for when the contents thrust the halves of the frustule apart, the internal membrane elaborates the silex for the inside edge of the sutural zone and the zones for the new valves. Within the membranous sac is a dimly colored band more or less granular, attached to the inner surface of the internal mem- brane directly beneath the valves and along the zones ; it is contractile and apparently serves to hold the valves together besides equally dividing the contents of the Diatom, by means of extremely thin membranous walls which issue from it. Xll DIATOMAOE^. OF NOKTH AMKKIOA. Possibly this structure pertains to all diatoms, though it can be detected only in the larger specimens. MOVEMENTS OF DIATOMS. These have excited the curiosity of all observers and given rise to a belief with many, that tb.e Diatom belongs to the animal rather than to the vegetable world ; but though the latter opinion now prevails, y^.t the cause of the movement of Diatoms has not thus far been satisfactorily accounted for even by those who have, like H. L. Smith, devoted much attention to the sub- ject. This gentleman at the tenth annual meeting of the Amer- ican Society of Microscopists presented '^4 Contiibvtion to the Life History of the Diatomaeew^^ in which he says : "I am dis- posed to consider" (for reasons he had previously stated at length) "that the motion of the Navicular is due to injection and expulsion of water and that these currents are caused by different tension of the" (internal) "membranous sac in the two halves of the frustule. In those Diatoms which do not have the central band thus binding the frustules, as for example, the SynedriP, the Fragilariw and the circular and angular forms, no motion is to be observed, or at best but a slight trembling, as in this case, the tension is more nearly uniform over the whole surface of the internal sac." More recently, Mr. Cornelius Onderdonk in The Microscope for August, 1890, ascribes the movements of Diatoms to "a thin fluid mass in rhythmical motion " which covers the surface of the Diatom. "We cannot conceive that the fluid has power to drive itself, for it is unfoinitid material. What then remains except that the motive force is on the walls of the cell . . . )> BEPROPUCTION OF DIATOMS. Diatoms reproduce themselves by three methods of conjuga- tion. Ist. By two frustules uniting their undifferentiated endo- chrome, thereby producing a single sporangium about double the size of the parent frustules, which finally develops into a frus- tule with ends more rounded than the parent fru.stules and the valves not so wedge-shaped. Suris^Vn splendhla is a good ex{i,m- ple of this method, see plate I. 2d. By two frustules uniting their differentiated endochrome and producing two sporangial cells ; sometimes one of these proves abortive, but that has no influence on the growth- and development of the other. NavictUa amphirhynclus is propagated in this manner. INTRODUCTION. Xlll 3d. By the diiferentiated contents of a single frustule produc- ing one sporangium, the most common mode of propagation as well as the lowest in the scale, as in the free form, Oymbella cuspidala. Besides reproduction by conjugation there is multiplication by division, and as diatoms do not grow these divisions tend to make the resultant diatomw smaller and smaller until some become so minute as in the Nitzachice, Naviculw and Amphorce, that while living they can go through the pores of filtering paper ; a single frustule by constant division and subdivision of its progeny, would give rise in twenty-five repetitions of this process, to more than thirty million individuals, did they all survive. As regards the longevity of diatoms, it may be said that dried specimens can not be revived, but they have been known to sur- vive nearly a quarter of a century in their natural element even though kept for long periods in the dark, and at times frozen in solid ice. Their siliceous covering is almost indestruc- tible, resisting the strongest acids and passing unscathed through very high degrees of heat. There are very few microscopic objects of more interest than the Diatom or which return more ample rewards to the patient, enthusiastic student. CONSPECTUS OF THE FAMILIES AND GENERA OF THE DIATOMACE^ SYNOPTICALLY ARRANGED BY PROF. H. L. SMITH IN "THE LENS," FOR JANUARY 1872. CLASS CEYPTOGAMIA. Sub-class ALG^. Natural Order DIATOMACB^. [8. V. — /Side View; f. v. — J^ront View,] Plant a Frustules (siliceous box), bivalve, pseudo- unicellular, and with an external, more or less apparent, gelatinous en- velope, and an internal investing membrane, with endochrome. Gemmiparous increase by Self-Division. Eeproduction by CON.JUaATION. Tribe I. RAPHIDIE^. a distinct raph6 and nodules on one or both valves ; cent ral nodule rarely wanting or ob- scure; valves simple or complex ; raph4 generally prominent in s. v., occasionally in f. v., especially when constricted, with nodules at the con- strictions ; f teeth, spines, awns, or 1 processes. -.Iways with -I Frust ules mostly bacillar in 8. V. ; some- times broadly oval : without ^' -■>! ' > t « " ' 16 DliTOMACEiE OF NORTH AMERICA. Tribe II. PSEUDO-RAPHIDIEiE. P RUSTULES generally bacil- larins.v. some- times broadly ovai ; or subor- bicular — very rarely orbicu- lar. Frustiiles with or without nodules ; always with either ■ r processes, teeth, spines, . . without ^ ^-wnS' or true rapht' on the valves ; never angular las. r hyaline. a pseudo-raph^' (simple lire or blank space) on one or both valves ; or longitudinal septa) or vittJB in f. v., or valves fusiform, sigmoid, beaked, or alate, or with numerous trans- verse ribs, plicae, cos- tae, striae, or rows of granules on one or both valves, rarely regularly radial ; cos- tae sometimes show- ing in f. V. except spines very rarely among the Surirelleee, or Tabella- riece, when the charac- ter is al- ready suffi- ciently in- dicated by the above. rarely unstriate, or much developed in f. v., unless longitudinally septate. I CONHPKCTUS OF TIIK FAMILIEK AND (lEXERA. 17 TuilJK III. CRYPTO-IlAPHIDIEiE. or P K U 8 T U L E H gtMierally cir- eurlsir, sub-cir- culai'orangulai' in 8. v., more rarely elliptical oval, or bacil lar. either never much developed in f. v., and filamentous ; or with processes, teeth, spines, or awns ; or more or less hyaline or irregular ; or transversely septate (or costate) in f. v. without a central linear blank space or true raph^', on the valves, except a raph6 or pseudo- raphe in Ka- i-hidodiscus. v, microscope May, 1889, p. ^35. m- ANALYSIS OF THE FAItfiLIES. Trihe I. RAPIIIDIILE. IjOttered flj^iires refer to FiiiiiilioH named in Inst pumKiitpli of each section. F'lain timin'.s refer to the eorreHponding mnnberson tiie loft of each section. j Frustules with valves alike ( Frustules with valves unlike ( Valves cuneate ■ ( Valves not cuneate Valves symmetrically divided by the raphe Valves not so divided I Valves alate, or obliquely striate 'A 3 ) Valves not as above, more or less arcuate or cymbi- . form f Valves with central nodule equally distant from ends. * ( Valves not as above ( Valves with central nodule obscure or wanting ^*( Valves not as above < Valves with central nodule unequally distant from 6,-; ends ( Valves not as above 2 1 8C 7 4 3 8A 8B 5 8B 6 8C 7 [ Frustules genuflexed, nodule or stauros on one valve, ; usually on the concave margin (at the constric- \ tion), valves rarely broadly oval 8D l^ All others, valves generally broadly oval, rarely bent 8E 18 DIATOMACE^ OF NOKTH AMEBIOA. r A CYMBELLEiE Ib. Navicule^ 8.-^ c gomphoneme^. I D AciINANTHEiE... I E COCCONIDE^ (I.) (11.) (III.) (IV.) (V.) Tribe II. PSEUDO-llAPHIDIEiE. f Frustnles compound ; really or apparently longitudi- J nally septate or vittate ; septae or vittae showing j distinctly in f. v 1 [ Prustules not as above, or only seen in s. v 2 J Arcuate in f. v. (apparently septate!), valves alike, or differing only by a pseudo-nodule -at ends of concave valve 9A [ All others .' 9B 1 Valves circular, sub-circular, very broadly oval, or differently costate 3 Valves not as above 4 f Valves mostly hyaline, with a few pervious costae - j (scalariform), or arcuate f. v., with valves difter- ■ I ently costate, really septate in f. v 9B [ All others 90 r Valves fusiform, sigmoid, or beaked, or one margin 4. •] more strongly marked than the other 9C V Valvet* not as above 5 i Valves transversely undulate (undulations conspicu- 5. } ous in f. v.), with transverse shaded bands 9C ( Valves not as above ISF Ui I Fiiistuh'8 tniiiNvorwIy H<'])tate, or costato ; cunoato, !». aiigiiliir, or sub ;iii},'ular ' FniHtuh's not as ahovr I Frustult's not lauch «lev('lo|H' Hi. 17. (•oNNpP/TtfR OF TtfK PAMIT,iF>» AND (IKVKUA. 21 FruHtiilcH HJinplc, arcuiit*' in s. v., linear in f. v., laplM' and ('(Mitral ikhIiiIc! niai'^^iual in s. v., valve 1 ! sonu^tiincH intlatcd in tli(^ center of ventral margin CKItATONKIH ir. All others, raplx'- freiinently eurv(!(l Cywhki.la hi. KAMIIiV II. NAVrcULK.K. 1 KruHtnles conipoiind, — valves with locnii (marginal (H'lls) MAHT0(JI,()IA IV. ' Frustiiles not as above 1 Frnstnles coniponnd ((nich valve with two plates); one (superior) with transverse ribs, the other (inferior) striate, with raphi*' and noduhis Stictodehmis v. l Frustules not as above 2 I Valves with a conspi(!nons, transverse smooth sili- 2. eeous band (stanros) not alate Stauuonfjs vi. ' V'llves n()t SIS above 3 ( Valves sigmoid, or areuate ; or frustules alate, or 3.-] raphe indexed or rellexed 5 V Valves and frustuU^s not as above 4 I Valves with a central nodule Navicula vri. 4 Valves without eential nodule (or obscure) ' AMI'IIII'LEURA viii, [ Valves symnu^trically divided by the raplu'* ; frus- j. ; tules not alate, rarely constricted in f. V '*' \ PlKUROHIOMA IX. { Valves or frustules nor as above G f Valves not symmetrically divided by the raph^', I which is arcuate, ends retlexed, and marginal a A TOXONIDIA X. All others, alate, usually constricted in f. v L . Amphiprora XI. \ > Family III. Gomphoneme.t;. Frustules curved in f. v., nodule on concave valve... RHOIKOSPIIENIA XII. ( All others Gomphonema xiii. Family IV. Aciixanthk.e. Free or stipitate A(;hnantii E8 x iv. FAMIIiY V. C;(X'0()NI1)K.K. ( Valves with marginal cells Orthoruns w. \ Valves not as above 1 DIATOMACK.*: OF NOHTlI AMKKUA. S ValvPR not Rvmmotricjilly dividod by tho raphd. I. -J AnorthnH \\l. I Allothui-g COCJCONKIH XVII. 1 f 1. *> ■ M 4..UAPiriI)IK,1-',. FAMIIiV VI. FRAOIIiAHIK.K. FruHtules arcuate in f. v., valv(w with inttM'rupt<'(l tranHV(M-so Htriao oi- costjve ; and one or both valvoH with pseudo-nodulcH (blank HpaceN) at the endH Okphyria xviii. Prustules and valves not as above I F'rustule^ more or less arcuate in s. v., with trans- voi-se (often granulate' ribs vcanaliculi W. dian line or a blank Hpace ; valveH in- Hated or vunBtrit^ted ; terminal n<»duleH present, and jfenerally prominent in f. v....Dimkhegkamma xxv. PruMtules not aH above 8 FruHtules with a serrated suture ; valves without a median line, and with transverst) eonspicuous rows of pores or dots., Terebraria xxvi. Frustules not as above tt Frnstules in f. v. narrow, linear; valves lanceolate or iiiHated ; with eonspicuous monilitbrm (j^ener- ally somewhat radiate), transverse striae; and a median line or black space (trezigzag, filament Fragilaria xxxii. Valves and frustules not as above 15 Frustules cuneate ; valves tiansversely costate or distinctly granular striate, with a median line PODOOVSTIS XXXIY. Frustules not lus above... 17 Frustules compound ; valves costate or ribbed ; ends of costae ])roniinent, sub marginal and capitate in f. v.; frustules not cuneate Dentkula xxxv. All others ; valves costate ; linear, or cuneate in f. \ . ; (?oh(iriug ; filament zigzag, curved, or straight DiATOMA XXXVI Family VII. Tauellarie.'E. FrustuUiS linear, or cuneate, and in f. v., with monil- iform vittae (ends of -costae) ; valves divided into chambers by transver.se ribs (scalariform i; outer valve finely pervious striate, without median line. Climaoosphenia xxxvii. Frustules not as above. I F'ustules curved in f. v.; valves costate; dissim- ilar; septae rudimentary Entopyla \xx\ii\. Frustules not as above 2 Fiustules in f. v. with straight vittae, which are usually alternate ; cohering, forming a zigzag fila- 2. "! ment ; valves transversely striate, and inllated at 4.-1 r I I I center and ends Tarellaria xxxix. Frustules not as above 8 Frustules with straight vittae, in pairs, and inter- rupted at the ends and center in f. v Diafomella xi,. Frustules not as above 4 Frustules with vittae in pairs, which are straight or undulate in f. v. ; not interrupted or enlarged at the ends ; cohering, forming a zigzag filament Grammatophora xli. Frustules not as above T) Frustules filamentous ; vittae in f. v. somewhat en- larged at the ends ( clavate) ; valves pervious cos- tate ; costae few, showing in f. v Gompliogramma xlii. Frustules not as above 6 bONat»ECTtTS OF TttE FAMILIES AN^ft GENERA. 26 f>.-{ 7. 8. \ 9 A Valves without previous ci-^tae, quite smooth, oj' very finely striate ; often with fine median line ; frustules hyaline in f. v 7 Valves and frustules not above 9 Frustules with spines (bristles) at the angles in f. v. Atthcya xliii. Frustules without spines 8 Septae (or vittae) in f. v., interrupted, alternate Tessella xliv» Septae not interrupted Striatella xlv . Frustules compound ; valves with a median line, and gener?ally blanic ends ; costate or striate. Septae in f. V. connected by transverse striae (latticed) ; frustules cohering, forming a flat filament Ehabdonema XLVt. Valves mostly hyaline, with a few pervious costae (scalariform) ; linear, orbicular, or inflated BiBLARIUM XLVII. 1. 2.^ 3.-! 4.i PAMTIiY VIII. SURTRELT-E^.. Frustules compound ; valves broadly oval, unlike ; one costate, the other sieve-like (cribrose), punc- tate ; without nodules Campyloneis xlviii. Frustules not as above 1 Valves transversely undulate, undulations conspicu- ous in f. V. ; striate, and with a few transverse shaded bands Cymatopleura xijx. Valves not as above.... 2 Frustules in f. v. showing a marginal row of short sub-capitate processes ; valves transversely costate Cscalariform) Glavularia i.. Frustules not as above... 3 Frustules bent in s. v., margins finely dotted, valves striate, without median line, and with an unequally notched inflation at one end ; cohering in a stel- late manner Actinella li. Frustules not as above... 4 Frustules linear in f. v. ; arcuate, with rounded ends in 8. V. ; margins punctate ; valves finely striate, without median line, terminal nodules on the con- cave margin. Frustules cohering in a zigzag man- ner, or in tables Bemwgonivm lii. Frustules not as above 5 26 1)1 ATOM ACK^-: OP NORTH AMERICA. 6.i ' Fnistules (inooiispicuously) alate ; valves elliptical or linear ; not cuneate ; parallel (dimidiate, mar- ginal, or wavy) r^^riate ; rarely costate ; median line, if present, simple, and not beaded or con- spicuonsly marked ; valves sometimes bent along the longer axis (apparently) Tnjhlioiiella 1.111. Frustnles not as above H Frustnles alate (sometimes inconspicnously) ; valv<'s cuneate, lenifoim. oval, or subcircular ; rarely linear, frequenMy twisted ; with simple median line, or more or less linear blank space ; center sometimes blank, or finely dotted ; margins or sub margins strongly maiked 1 somewhat radiate ; costate or plicate canaliculate, W. S.). Surtrklla i,iv. All oiiiers usually, finely striate), linear, constricted, iniiated, sigmoid, beaked, fusiform or carinate ; free, adherent, or in tubes Nitzschia lv. 1. 2.^ 4.^ Tkihk III. ("RYPTO-RAPHlI>IE/E. Family IX. ('H.KrocEHKyK. Frustnles annnlat;^ ; cohering ; elongate ; ends alike, calyptriform ; tipped with a spine or mucro ; often imperfectly siliceous Rhizosolenia lvi. Frnstules not as above 1 Frustnles with horns (elongated processes ; not spines simply ) ; valves frequently unlike... 2 Frustnles with spines or bristles ; or awns ; or smooth.3 Frustnles compressed, the sutural portion narrow ; horns fre(|uently branching or bifurcate ; some- times mucronate ; valves and horns sometimes with short scattere-l 1-; ;iS ' Spines (setae?) marginal; on both valves; valves dissimilar, mostly hyaline Hkr<^otheca i' in f. v., not capitate, valves often lunate, connecting zone hyaline oi striate Anaulus lxxv. Frustules not as above 3 Frustules mostly hyaline, or imperfectly siliceous, forming a straight or curved filanient ; processes obscure, or absent Eucampia lxx\ i. Frustules not as above 4 Processes generally straight on the outer margin in f. V. ; and tipperl with a spine or nnicro, which is sometimes obscure Hemiaulus i.xxvii. All others Biddulphia Lxxviii. Fa Ml I, V XII. ErpoiMscKii-:. Valves with plumose rays or dots about the flat mas- toid processes (or ocelli); rarely obscure; some times with a sub-quadrate central portion ; or a radiant cellulation interrupted by a linear series terminating in the ocdli Auliscus lxxix. Valves not as above I Valves circular or oval ; with the ocelli, or pseudo- openings, in compartments Craspedoponis lxxxi. Valves discoid with a central thickening or obscure nodule, and an interrupted raphe terminated by minute spines or spiniform nodules somewhat within the margin of the disc ; central portion of the disc naviculoid, depressed, its ends terminating at the spines. Striae radiate moniliform, extending from rapW' to the margin of the valve... Uapkidodis(ius. Valves not as above 3 rONHPKCTlJS OF THE FAMILIES AND (iKNERA. 29 1, 8. Valves with . PeterHii, Ixxxii, 3, 6, 7. prnhiiltilis, Ixxx, 12; Ixxxviii, 8. |)iilcliir, Ixxi, 1. Rof,'eisii, Ixxx, 10. soliittiimiiR, Ixxxviii, 9. sparsiiM, Ixxxii, 4. Tluiinii, ixxxviii, :(. AULISCUS. Amerininus, Ixxx, !). Biddiiiplua, " :\ 4. cnelatiis, Ixxxix, (I, i), 10. CarilmciiH, Ixxx, 7. Clevei, Ixxix, H, 9, 10, confliiens, Ixxxix, 8, II. Griinowii, Ixxix, 11, 12. Hardiiianinniis, Ixxix, 1. incertus. Ixxx, 8. intestinaliK, Ixxx, 5. JohnHonii, " I. MacraeanUH, ixxxix, 2. mirabihs, " 12, I a. inutabiliH, cviii, 8. Penivianus, Ixxxix, 4. pruinosiis, Ixxix, 13, 14; cxi, 5. punctatus, " 2, 3. racemosuf, Ixxxix, 7. radiatup, " 3. rectieulatus, Ixxix, 5, (1, 7. Schmidtii, Ixxxix, o. sciilptii8, Ixxxix, 1. speciofUH, Ixxx, 2. spinoHUs, Ixxix, 4, cxi, 6 Stockhardtii, Ixxxix, 14. lextilis, Ixxx, 6. Bacillaria. paradoxa, Ixviii, 32, 34. Kacteriartrum. ciirviitum, Ixviii, 20. fiircatiim, Ixvii, I. viirianN, " 2, 3, 4. Rkukei.eya iiiicanH, xxxi, 15. BlBLARIliM. clypeuH, Ixii, 25, 26. ellipticnin, cxi, 13, 14. Htylohibliiini, xxii, 5, H. BlDDULrHlA. an^iilata. ex, ti, 7. auritit, xcvi, 9, 10, 11, Baileyi, xcviii, 1, 2, 3. Brittoniana, xcviii, 18, 19. Call torn iciis, xcvii, 9. circiiiiiH, Ixiv, 1. Cookiana, xcviii, 10. decipiruH, " 6. 6. F>lwardHii, xcvi, 4, 5. eleKantiila, xcviii, 7, 8, 9. gigas, ciii, 11, 12. JolinsonianiiH, xcvii, 6. laevis, xcvii. 1, 2; ciii, 8-10. longicruciw, xcvi, 6. longiHpina, xcvi, 12. Iiinata, xxii, 29. iiiembranacea, ex, 9, 10. MobilienniH, xcv, 9. occidentaliH, Ixiv, 11. ovalis, xcvii, 8, 10. polyinorpbuH, xcvii, 5, 11. I'orpeia, xcviii, 15, Ut, 17. piilchella, xcvi, 1, 2, 3. quadricornis, Ixiv, 8, 9. reticulata, xcvi. 13, 14. rhombus, xcv, 7, 10. Roperiana, xcv, 8, 11-13. seticulosa, xcvi, 7, 8. suborbicularis, xcv, 5, 6. tenuis, xcviii, II, 12. trinacria, xcviii, 13, 14. Tuomeyii, xxii, 1 ; xcv, 1-4. turgidus, xcvii, 3, 4, 7. Weissflogii, Ixxviii, 3-5, 6. Woolmanii, xcviii, 4. Campylodisccs. adornatn'e, Ixxii, 3. ambiguus, Ixxiii, 2. Americanus, Ivi, 7. arguB, Ixx, 5, 6, 7. a ' I I I 11 «^ INDKX. <^ ('AMI'YI,OI>lMrl'd. IticoHtutii, ex, :i, 4. liifiircittiiH, Ixxii, 'J. l>iiniir){iiiiitiiH, Ixxxiii, H. L'liHtilii, Ivi, y. cIvpeuH, Ixxiii, H. roni'innim, Ixxii, 5, (f, (•(mtiitiiH, Ixix, !.'{, 14. creiiri'HtriHliis, Ixxxiii, i>. iTiiiroHUN, I XX, 1, 2. eirli'ttiiiniiH, Ixxxiii. 7. EclieneiH Ixxiii, 5, 7. Khrenhernii, Ivi, 6. UreenleafinniiH, Ixxxiii, I. (friiiiderii, ' 4. hihernifnw, Ixxi, 2, H. Ildd^sonii, Ixx, 3. Iliiiiiboltii, Ivi, I'i; Ixx, 12, iinperiiili)', Ixxii, 1. inteirnediuH, Ixxxiii, 6. latus, Ivi, 10 limhiituH, Ixx, 10, 14. initrgiiiiitiiH, Ixx, 15. Mt'xicanim " 13, Miilleri, Ixxiii, 1. noricuH, Ixxi, fi, 7. paviilus, Ixx, 8, 9. Piialangitim, Ixxxiii, 14, 15. |iiinctiilatii8, " 5. radioHUH, Ixx, 11. Kalfsii, Ixxii, 4 ; Ixxxiii, 10. rotuia, Ixxxiii, 11, SamoensiH, Ixx, 4, 16. Saucrhec-kii, Ixxxiii, 12, 13. iSchmitltii, Ixxii, 6. Himilans, Ixxxiii, 16. stellatuH, " 2. tabulatus, Ixxiii, 4. triurophans, ixxxiii, 3. Campyloneis. argus, xxxiii, 24, 25. Grevillei, xxxiii, 28, 29, 30. regalis, " 39, 40. Ceratonies. arcus, XXX, 24, 25. Chaetocebos. bacillaria, Ixiii, 9, 10. boreale, Ixv, 11. Californicum, Ixv, 13. distans, Ixii, 29. Chaetockhos. didviniiH, Ixv, 12, 14-16; Ixxviii, 16. imiirvatii, Ixv, 9, 10. inoniiu*', " 22. CUMA(Ot*I'll.*;NIA. olonuata, xlviii, 32, 33. inoniliKt'rn, xxix, 7, H, COC'IONKIS. ntnlilKiiii, Ixiii, 35, 36. .Vnicricanii, xxxiii, 32. IxircMlis, Ixiii, 18. CalifMrnica, xxxiii, 19, 20. toMtatii, " 9, 10. decusMata, " 31. dinipta, " 15, l(i. elongata, l\iii, 37. liiinica, xxxiii, 36. Keriiinata, v, 7. (Jrevillei, xxxiii, 8; xxxiv, 8, 9, 10. iiitcrniptH, xxxiii, S, lineata, xxxiii, 6, 7 -, xxxiv, 4. marginata, xxxiii, 38. Mortiionoruiri, xxxvii, 23. nitidu, xxxiv, 3, 5. nitidniaiiH, xxxiii, 37. ohlonga, " 34. Oceanica, " 35. pediculiis, " 21.27,33. pinnularia, " 41. plarentula, " 17, 18, pseudo-marginata, xxxiii, 1. regalis, v, 11 ; xxxiv, 6, 7. rhonihia, Ixiii, 19. rhonibit'era. v, 8, 9. scutellum, xxxiii, 12, 13, 14, 22, 23. striata, xxxiii, 26. sulcata, V, 12. Thwaitesii, xxxiii, 3, 4. COCCONEMA. asperiim, xxxiv, 14. .fanischii, vi, 5. lanceolata, " 14-16. lanceolatum, vi, 1-3,11. Mexicanupi, "4. parvum, " 8, 9. COLECTONEMA. vulgare, zxii, 28. INPRX. M7 CosclNoDlwItM. H|ii('iilutiiH, Ixxxvi, i); xciv, lit. itrKiiH, Ixxxi, 8. iirtiiaiiiH, Ixxxvi, '2. iiMlcr(ini|ilniliiH, Ixxxvii, -t. liiHtiKiiiatii", Ixxxvii, I. Iioroiilis, Ixxxvii, I. ('aliloniicii, cviii, 7. ciintniliH, Ixxxvii, 6; xi-iv, 12. cDcciineiloriniN, xciv, 4, 6. (•(inciiviiH, xiiv, ."{, CniMHiiH, Ixxiv, 1 ; Ixxxvii, 2. lit-niiriiis, cxii, ti. iliiiniiiiii, Ixxxvii, 'A. elcKHiiH, xciv, I. excuvnIiiH, xc, 1,2. excentriciiN, xc, Kt. Kloriiliiliis, xc, "). ii'\K»s, Ixxxi, St. lK'ti'r()|)()riin, Ixxxv, (i; xc, 12. imprcsHiiH, xc, St. incretiiH, ex, 1. intcrniL'diiis, Ixxiv, 13. U'litoinif, xc, tt. LewiHiiiniiH, xciv, 18. liiiciitn-, Ixxxvii, 10. lificcntnirn, Ixxiii, 80. niar^Mnuto-lincatiis, xciv, 1(1. nnii^iiiatus, cxii, K ; xciv, 21. iiiarifiniiiatiiH, xciv, 25, 2(!, 27. iiiiiKir, xciv, 20. nitidniiis, xciv, 10, l-'>. nitidiis, xciv, 22, 2.S. iKMliiiifcr, xciv, 7. N(»ttinjrlianieiisis, xciv, 24, <)ni|ili.ilai)tliiis, Ixxxvii, 8. {latinii, Ixxiv, 0, 7. j)erfiiratiiH, Ixxxvii, 0. |iiiiictattiH, cviii, 11, 12. radiatiis, Ixxxi, 7 ; xc, 3. railiolatii.s, xciv, 6. radii >MUH, " 11. roliiistiiH, Ixxxvii, ."), 11. rolula, xciv, 17. sol, Ixxiv, 2, 4. stcHij!;er, xciv, 19. siilicdiicavus, Ixxxi, 10. siilxx'latus, xc, 11, suhtiles, xciv, 8, 9. siispectus, Ixxxvii, 7. syiunietrieiis xciv, 2. ('()H4iN<»IHHrim. vdiitiiH, xc, 7, 8 ; cxi, 12 WdodwanliH, xc, 4. C'(IHMI<»!)|SCIIH. leiuiix, Ixxv, 12. (HAsi-KiinniHcim. (\)Hciii<)iliMciifi, Ixxxvi, 3, 8. clenaiiH, Ixxvii, 1, 2. Ixxxvi, 7. iHoporiiH, Ixxiv, •'>. iiiicrddiHciiH, Ixxiv, 3. OcidiH-lridiM. Ixxxvi, 4. rliiitiiliiciiH, ixxxvi, 5. ( Y('L()'ri:M..\ anti(|iia, Ixvi, 18, 19. coinptH, Ixiii, 30, 31 ; Ixvi, 20, 21 ; ex, 5. Kiit/.iiiKiann, Ixvi, 8, 9. MtMic^'liiiiiaiia, Ixvi, 13-1.'>. opcrciilata, " 22-24. plivHopIca, Ixii, 20, 22. rotiila, l-xvi, 10 12. striata, " 16, 17. CyMATOI'I kura. an^iilata, Ix, 16. apiculatn, " 9, 12. C'aiiipylddiscus, Ixxi, 9. elliptica, ix, ")-7. cllipticiim, cviii, A, 6. Hihornicu, Ix, 8, 10, 11. niiirina, " 14, IT). sdicii, " 1-4, 13. Cymbeli.a. affinis, vii, 31, 32. Americana, vii, 24. ainpliicephala, vii, 15. aiiKlicii, " 33, 34. cistula, vi, (5, 7, 12 ; vii, 2(1, 35. curta, vii, 30. cimpidata, vii, 16, 20. Cyml)ifdrmiH, v, 10 ; vii, 28. Ehrenl)er>i;ii, vii, 3, 21, 25. pxcisa, " 9, 10. Gastroides, " 4, 5, 12, 13, 23. jjriicelis, " 20 helvetica, " 6. Hetcropleura, vii, 1,2. Kaiustehatica, " 11. leptoceros, " 8. inaculata, " 22. naviculifdrmis, vii, 7, 14. !t In i i] n i I parvii 19. 38 INDEX. Cymbella. rotundati), cxi, 19. Sporangial growth, i, 10-12. Stodderi, Ixiii, 34. stomataphorn, vii, 17, IH. turgldula, " 27. ventricosa, vi, 13. CvMliOSIBA. Aganlhii, xxix, 5, 6. DlMEBEQRAMMA. fossile, Ixiii, 27. fiilvum, V, 23. marinum, xlv, 4, 5. Novffi Ctesarsea, v, 16, 22. Denticcla. antillaria, Ixiii, 32, 33. lauta, xlvi, 10; Ixviii, 16, 17. thernialis, xlvi, 9; Ixviii, 14, 15 valida, Ixviii, 9-11. DiATOMA, anjeps, xlvi, 11, 17, 18. Ehrenbergii, xlvi, 16, 21, 22. eloiigatum, " 15, 26, 27. pectinale, " 19,20. temie, " 23-2">. viilgare, " 12, 14. DiOLADIA. capriolus, Ixiv, 5, 7. clathrata, " 2 mitra, " 3, 7. DlCTYOCHYA. ? xlviii, 25-28. DiSCLOPBA. Oregonioa, cxii, 14. Discu: p orceiaineour., Ix.\iv, 17. unbenant, Ixxviii, 15. Encyonema Auerwaldii, viii, 21. caespitosum " 20, gracile, " 16, 17. paradoxum, " 23. prostratiim, " 24. triangulatum, viii, 22. ventrico, " 18, 19. Entomooasteb. Woodwardii, v, 25. Epithemia. argus, XXXV, 14-17 ; xxxvi, 1-3. constricta, xxxv, 20, 21. gibba " 1-3, 8, 9. Epithemia. gibbenila, " 26, 28. granulata, " 4, 5. Hyndnianii, xxxv, 6, 7. marina, xxii, 23, 24. musfiilui', xxxv, 19, 18; Ixviii, 27. ()(!fllata, xxxv, 22, 23. Horex, xxxiv, 13 ; xxxv, 24, 25. succinetn, xxxiv, 12. tentrioiihi, xxxv, 34. turgida, " 10-13. vent.ic'osR, i, 7, 8. zebra, xxiii, 31, .32; xxxv, 29-33. Eucampia. Virginira, Ixvi, 32. ZodiaeiiH, " .34, 35. ElTNOTIA. Americana, Ixxviii, 12. Bactriana, xxxviii, 1(». bicep.s Ixviii, 23. bidentula, xxxviii, 9. cygnus, xxxvii, •"). decaodon, xxxvi, 14. declives, xxxvi, 23. depressa, xxxvii, 3. diodon, xxxvi, 5, 6, 21, 22. dizyga, xxxviii, 7. formica, " 20,21. gibbosa, " S. heptodon, xxiii, 23. impresHa, xxxviii, 22. incisa, " 24. Innaris, " 16-19. major, " 1-4, 14. mono(ion, xxxvi, 4, 12. mositf, xxxviii, 30-32. paraliela, xxxviii, 15. pectinalis, xxxvi, 1.5-20; xxxviiii 12, 13. pentaglypbin, xxxviii, 29. polyglyphiH, xxxviii, 11. polydon, xxxvii, 1. praeriipta, xxxviii, .'), 6. robusta, xxxvi, 9-13. sella, xxiii, 29. serra, xxxvii, 2. serrnlata, xxxviii, 33, .34. tridcnlnla, xxxviii, 25, 26. triodon, xxxvi, 7, 8. undinaria, xxxviii, 35. zygodon, '• 27, 28. INDEX. 39 teuODIA. gibba, Ixviii, 26. .Janischii, cv, 19, 20, 21. EUNOTOGRAMMA. (lebilis, Ixxxv, 16. laevis, " 17-19. EUI'ODI-CUS. ar){us, Ixxvi, 1, ?, 4. Californicus, Ixxvi, 7. oculatiis, " !>. rtidiatus, Ixxvi, 6, 11 ; Ixxvii, 8. RogerKii, " S; cxi, 17. Fkaqilaria. amphecephala, xlvii, 21. biceps " 9. bi nodes, " 8. brevJHtriata, " IT). Californica, " 22. capucina, " 1-3. construeno, " 1.S, 14, 20. Dimeregramnia, xxxvii, 4. entomon, xlvii, 26. Plarrisonii, xlvii, 12. inflexa, v, 21. miitabilis, xlvii, IS, 19. Newl)eryii, v, 20. Pacifica, xlvii, 23-25. paradoxa, xlvii, 16, 17. paralitica, " 10. Treraontii, v, 17. ttirgens, xlvii, 11. venter, v, 19. verescens, xlvii, 4-7. Gkphvria. conatricta, Ixi, 3. gigantea, " 1,2. .Japonica, xxxiv, 15, 16. media, Ixi, 4, 5. GlY1'HODE8MI8. difitans, xlv, 21, 22. Williamsonii, xlv, 2.% 24. Gl.YPIIODI8<;US. Griinowii, Ixxvi, 9. stellatus, " 8, 10. (ii MPHONEMA. acuiiiinatum, xxviii, 22-27. Americanum, xxiii, 22, 28. augur, xxviii, 17, 18. capitatum, xxii, 19; xxvi, 6, 7 ; xxviii, 16, 20, 21. GoM PHONEMA. constrictum, xxvi ,12-1 5; Kxv.'ii, 15, 19. cristatum, xxvii. 3, 11 dichotomum, xxvi, 16, 17 elegane, xxvii, 8. geminatim, xxvi. i-4, 10, 11. gracile, xxvii, 6, 7. intricatum, xxvi ,4. mainmilla, xxvi, 5. maximuin, " 8,9. Mexicanuin, xxvii, 12 olevaceum, " 14, 15. olor, xxix, 19. Oregonicum, xxii, 8, 9. sarcophagus, xxvii, 10. semipertum, " 16. spheerophorum.f xxvii, 1, 2. tenellum, " 13. turgidum, " 9. vibrio, " 5. GONIOTHECIUM. didyiuum, Ixiv, 31. monodon, " 30. obtusutn, " 33. odontella, " 17, 18. Rogersii, xxxiv, 17, 18, 19; xxv, 'JO; Ixiv, 32. GBAMMATI PHOR A . angulnsa, xiix, 11-13. Caribiea, " 19. gibba, " 6, 7. marina, " 8-10, H-16. maxima, " 26. Mexicana, " 24, 25. serpentina, xlix, ], 20-23. strictH, •' 17, 18. undulata, xlix, 3-5. Hantzschia. Amphioxys, li, 15-17. Heliopelta. nitida, Ixxi, 4. i Hemiaulus affiiiis, Ixiv, 15, 16. bifrons, Ixiv, 26, 28, 29. Californicus Ixiv, 34. polycestenorum, Ixiv, 19, 20, 24, 25, 27. polymorphum, xxv, 23, 24, 25. Hbrcotheca. mammiiaris, Ixiv, 22, 23. ! l.'"'!l 40 HnM(R'LAni.\. (Mpitutii, xxix, lo, lo. tiliformiH, xxix, lH-18 Hyalodictya. DiHiiH", Ixviii, 'M. HYAT-OniSOIM. laevis, lix, 2. iiiaximuii, lix, 7, 8. reti'ulatup, ex, S. Stelliger, lix, 6. Hubtiles, " 'A. VVhitneyi " 5. Hydroseba. triv;iietrn, ev, 9-1*2. ISTHMIA. enervifi, cix, 6-9. nervosa, " 1-'"). LiCMOPHORA. ('ali)'oinica, xlvii, '.V2, ;{2a. flavellnta, xvix, 1, 2,; x 27-29. grac'iliH, xlvii, 30, 31. Jiirgensii. xxix, 12; xlvii, 34. papeana, xxii, 26, 27. liiicta, xlvii, 35, 37. LlOSTEPHANIA. compta, Ixii, 21. LiRADISCUil. tninatus, Ixiii, 14-16. LiTHOPESMIUM. contraclum, Ixii, 28. MasI'OGLOIA. angiilata, ovii, 10. apiculata, v, 24. ^ ' eltgans, cvii, 8. exigua, xxx, 15, 16. Orevillei, xxx, 17, 18. Kinsmanii, xxv, 26, 27 lanceolata, xxx, 19, Smithii, " 21, 23. Kubmarginata, evii, 11. Mastooonma crux, lix, 1. heptagonia, lix, 9. Hexangulata, Ixii, 18. Melosira. Americana, Ivii, 10. arenaria, Iviii, 5-7 ; cxii, 2. Baileyi, Ixxiv, 9, 10. Borreii, Iviii, 8-11. INDEX. Melohira. davigera, Iviil, 16. erenulata, Ivii, 16-20. I ... orotonensis, Ivii, 6. distans, Ivii, 30-32, 36. granulata, Ivii, 7-9, 21, 22, 33. herologium, Ixiii, 20, 21. I Huttonia, ciii, 13. i nummuluides, Ivii, 1-5, j orichalcea, Iviii, 17, 18, scalarip, Ivii, 23-25, 28. sculpta, " 34, 35 ; Iviii, 3, 4. sol, Iviii, 1, 2. i spiralis, Ivii, 26, 27, 21). sulcata, Iviii, 12-15. ! undulata, cxii, 4, 5. varians, Ivii, 11-15. Meridion. circnlare, xxxvii, 24, 25, 27, 28; Ivii, cxi, 15, 16. intermedium, xxxvii, 26, 29, 30. Navicula. •33, I acrosphaenia, xxi, 8,9, 11. I accuminata, xvi, 16 ; xx, 5. I affinis, xiv, 1, 2. I Americana, x, 51. i ampliigomphus, xviii, 10; xix, 5. amphionys, xxiii, 24, 25. amphirhyncus, xiv, 3, 4 ; xix, 13, amphisb&'na, xix, 23. angeiorum, xi, 3, anglica, x, 1. angusta, x, 34. apiculata, xiv, 13, 14. apis, xvi, 19. approximata, xvi, 18. aspera, xx, 4. Bacilluni, x, 29, .^0. Baileyana, xxiv, 3, 4. b'inoides, xvii, 23. bioculata, xii, 13. Bleischii, xviii, 9. Boeckii, xxv, 8, 9. Bohemica, ix, 46. Bomboidus, xii, 17. Bombus, X, 47; 50; xxiii, 3. Borealis, ix, 23, 24. brasiliensis, xiv, 21, Brannii, Ixviii, 13. Brebissonii, x, 26; xix, 16-19. brevis, x, 7, 17. INDKX. 41 Navicui.a. Californica, xiv, 17, 24 ; xvi, 1. campylodiscus, xii, 15, earassins, Ixiv, 20. cardinaliH, X, 45; xii, 18, Caribfea, xvi, 54. carinifera, " 15, Chersonensis, xv, 19. circumsecta, ix, 27. duthensis, xi, 10; xvi, 27. coarctata, xv, 'A, 11. cocconeii'orinis, x, 14. oolumnaris, xviii, 1, 6. commutata, xvii, IS. confecta, xv, 12. Comperii, xvi, 7, xvii, 2. cnstata, xxiv, 6, 7. crabro, x, -VA ; xv, 7. crabnimiforinis, xv, 9. orueiata, xi, 6. cryptocepba' x, 13. oruciformis, a iv, 19, ciispidata, xii, 16. (^yntbia, ix, 2'>, 26. dactyliiH, xxi, 1, 2, 3, 4. Dariana, xvii, 6. decurrens, ix, .?8, .39 ; xxv, .3. denta, xv, 15. De Wittians, xxii, 18. dicephala, xvii, 21 ; xx, 22. didyma, xii, 12; xix, 24, 2^y. diffluenH, xvi, 21 . diffusa, " 11. digitus, xxiv, 1. dilatata, xvii', 5, 7. dioniphala, xxiv, 8. diplosticha, xii, 3. dirhynchus, xi, 18, 19; xxv, 6. dirrhombns, xii, 14. discrepana, x, 4. , disphenia, xxiii, 9. distenta, xvi, 10. divergens, xix, 20, 21. Division of Diatonic, i 9-13, 14, 15. Donkinii, xv, 17. dubia, X, 27 ; xvii, 22. dnplioata, xxiii, 8. ele){ans, ix, 22; xxiv, 9. EiginenHis, xx, 22. elliptica, xiv, 18, 19. 4 Xavicula. elonjfatii, ix, 37. entonuin, xii, 6; Ixiii, I. esox, xxiii, 1 4. excavata, xiv, 1"), 27. excentrica, xviii, 2. execiita, xv, 4. ex i I is, 40. ' Eugenia, x, 10. eiidonia, xiv, (i. F'ebegerii, xi, 8. rtrniii, xix, 9, 10. Fiscberi, xiv, 11. • Kloridana, xi, 7. f()rci|)atii, xvi, 13, 20 fortiiicii, xxiv, 12. formosa, xix. 2, 11. fiisca, xii, 2o. fiisidiim. xxiii, 10. fiitiii", xvii, 8. Ki's^tniin, X, 2. geniinH, xi, 12, i:>; xii 8. jieinrnata, x 4(i. giblia XX. 9, 10, 11 ; Ixviii, 8. gil)l)eriila, x, .>■"), 38; xxii, 13. (]ri«»l)ilii, XV, 8. gigaw, xiii, o. globiceps, ix, 33. grHcilis, X, 22, 23. ( JreenlaDilica xi, o. graniilata, xvii, 14. (iriindleri. cxi, 8, 9 bemiptera, xvii, 19, 20; xx, 0. Hennedyi. xiv, 28, 29, 30. bexapla. xix, 4. Hitchcockii. xix, 30, 31. luinierosa, xvii, 12, 15. iinpresHa, xiv, 2o, 26. incomperta, xxv, 2. Indioa, xvii, 11. j inflata, xvi, 23; xix, 29. I inHexa, x, 25. interposita, xi, 14. interriipta, x, 31, 32; xii, 4. iridis, xviii, 4. irrorata, xvi, 2, 17. i Isocephala, xxiii, 6. I Johnsonii, " 13. Kutzingii, x, 48. lacrimanH, xii, 28; xv, 1. laciinaniiu, x, 39. ;! i 42 INDEX. 1 J 'ft'' Navicula. lanceolata, ix, .32, 42. latii, xxiii, 2(5, 27. latLssima, xvii, 24, 2'"). leptostigma, xxiv, 14. Lewisiana, " 2, liber, xxiii, 5, !!. Ifnearis, xix. 6. littoralis, x, 11, 12. lon^a, xii. 2.S, 24. lyra, xvi, G, 9, 14, 26. maculata, xvii, 1 ; oxi, 1, 2. marginata, xi, 16; xxiii, 2;cxi, 7. raarginiilata, xi, 10. marina, xiv, 7, 23. rneHOKongyla, xxv, 1. niesdlepta, xx, '.\ 1.3, 14, 16. Moesta, xix, 26. Mormonormn, xix, 7. multicostata, xv, 2. muscieforniis, xii, 7. nitescens, xiv, 8, 22. nobilis, xiii, 2, 4, 6. nodosa, xix, 14. nodiilosa, xxiv, i(',. notabilis, x, 49. nummiilaria, ix, 40, 43 ; x, 41, 42, 44. oblonga, xxi, 10. obtusa, XX, 19, 20. oculata, X, 36. Oregoneca, xi, lo. ornata, xv, 20. oscitans, xvii, 7. palpebrals, x, 6, 16. ' pandiira, xv, 5. papula, ix, 41. parca, x, 5. parniagma, xvii, 3, 4. • parva, x, 3. Pelagi, xiv, 16. pullioulosa, ix, 31. pennata, xiv, 9, 10. Pensacola, xi, 9. peregrina, xii, 20, 22. permagma, xi, 2. placentula, ix, 35. polysticta, ix, 28. polyonea,xi,17; xxiv, 13; lxiii,2. Powelii, xi, 4. ^praestes, xix, 28. Navk UI.A. j)reslii>|(b( ;i, xxiii, I. pretexlii, xx, 1, 7 ; cxi, 3. |)risi'a. XV, 6, 13. ]irriiiH)i, xxii, 14. sciiitillan.s xvi, 22. scdiiopleiira, xii, 27, H<,'iil|)ta, ix, 44, 4S. si'JuiK'ta, X, 24. semen, xx, 21. He|iaral)ilis, xix, '17. seriini.«, X. serratiila, xiv, •"). Sniithii, xii, 11; xiv, 12; xx,8. si^ina, xxiv, 10, 11. simiians, xxiii, 4. Siilinianornni, xi, 1; xxiii, 12. singularis, xx, 2, 18. Solaris, xvii, 6. spectabilis, xvi, 3. spluiesophora, xvii, 13. splendida, xii, 5; xv, 14. Stauntonii, xxv, 13, 14, IT), staiironeiforni, xv, 10. staiironeis, xx, 4. siibinflatu, xxii, 11. sniiorbiciilaris, x, 37. Hubniula, xii, 2. suspecta, " 26. tabellarin, x, 28; r.ii, 1 ; xx, 12, 17 ; xxi, 5. HPm INDEX. 4:J I Navi. • majusciila, xliii. 111. marina, xliv, 16, 17. obtnsa, xlii, 7, 18. Nrrzciii.\. palia, xl, 26, 27. paiidiiriformiH, xliv, 3, 4, 9. ])aradoxa, xliii, 27-29 plana, xliv, 1, 2, >nrniilata, xliv, 20-22, s, .lari.-i, xxxiv, 1 ; xliii, 9. sea libera, xliii, 1, scintelhiiii, xliv, 24. si^ma, xl, 4-7; xlii, 10, 11. sigi.ioidea, xlii, 9. sinnaiu, xliii, 21. spatlialata, xliii, 7, 8. fipet'tabilis, xl, 1. laliellaria, xliii, 22,23, tenuis, xl, 19, 20. tryl)lii>nella, xliv, 2;'.. valida, xlii, 1-3. veiinicnlaris, xlii, 12-1."). virgaia, xxv. Hi, 17. vitrea, xlii, Ki, 21, 23. vivox, xliv, 14, 1"). Odontklla, obluHa, Ixii, 23, 24. OnONTIDIUM. bvemale, xlviii, !), 6. 1-4, 7-12. 1.5-20. niesodon, " niiitabilp, tabeilaria, Odontodiscus. siibtiles, Ixxxiv, 7. Pkriitkra. lapra, Ixiv, 3(1. c'blamydo[>J ora, Ixvii, 5. tetradadia, " 17-19. Peristki'Hania. Baileyi, Ixxiv, 1-"). (Mitycha, Ixiv, 18. Pl.AGKOOnAMMA. (^alifornicnm, xlv, 16, 17. (irejiorianimi " 10, 11. obesiim, " 12-14. ornatnin, pnlcheiliim, pygmacum, tessellatiin), validiim, 20. 1,2,3. 6,7. 18, 19. " S, 9. Ixvi, .31. Pl,EUR08IOMA. Aestuarii, xxxii, 10. anRulatun], xxx, .5, 9. , \ u INDEX. il !'•] Pl,KUR()SiaMA. iittenuatiim, xxx, 2. Biiltioum, xxxii, 5, 6. decorum, " 4. (lelicatulum, xxii, 22. elongatum, xxxii, 2. eximium, " 14. Fasc''- ia, " 11. formosum, " 8, 9. Hippocampus, xxxii, 7. Kiitzin<,'ii, " 13. Macrum. " 1. nubecula, xxx, 4. obscniuui, xxx, 1 ; xxxii, 12. obtusatum, " K!, 14. pulchrum, xxxii. 3 ((uadratum, xxx, 10, 11. rigidum, " 3. sciotense, " \'2. Spenceri, " 6, fS. virs;iniacum, xxxi, 7. PODUOYSTIS. Americana, li, 14, IS. Adriatica, " 19. PoUO.^IRA. argus, lix, 4. Fcbigerii, lix, 10, 12, 13. hormoides, lix, 14-16. iiiaculati), Ixix, 4, ."). Montagnei, lix, 17, 18. stellulifera, " II. variegata, Ixix, o. PODOSPHENIA. Bailevi, Ixix, 1, 2. papeana, xxii, 26, 27. PoRPBfA. <|uadrata, Ixvi, ',i',\. (piadriceps, Ixvi, 25, .SO. F.«ErDO-A IILISCU.S. radiatus, Ixxxiv, 6. PYXimCULA. compresHa, Ixii, 17. cristata, " 9. miciata, " 7, 1 1. gigan, " 30. globata, xxii, 2, 3, 4. lens, Ixii, 10. limbata, Ixii, 8. urceolaris, Ixii, 19. Pyxil_,a. .\mericana, Ixv, 8, 17, 18. Pyx ILL A. Itorcale, Ixv, 20. 23. n, Ixviii, 1. hexagoiiM, Ixviii. 2. SCKPTf'.ONKlH. cadm-ens, xxxvii, 13. gi'iiiinatii, " 14. nit7,^(•hi()idf•s, xxxvii, 12. SCHIZOXKMA. .\ iiu'ricaniiMi, xxviii, 13. Cdrnoidcs, " 11,12. INDKX. 45 S, 10. Staukoneis. acuta, viii, 11. uncepB, viii, 4, 8, 9. apiculata, xxv, 7. Baileyi, xxiv. 24. dilatat;!, viii, 1. gracilc, Jxviii, 25. gracilis, viii, 10. Icodtaurum, cxii, 9. infiata, xxv, 11. legninen, viii, 5. linearis, " o. iineata, cxii, 11. iiionogratnma, ixviii, 6, 7. Phoeneeenteron, viii, 12, 15. phyllodes, cxii, 9. producta, viii, 7. pteroidea, xxiv, 26. punctata, viii, 1. pusila, Ixviii, 24. salina, viii, 6. Hignaa, xxiv. 25. stanrophaena, xxiv, 24. Stodderii, xxv, 12. Stepha.nodiscus. afttra»a, cxii, IH. carconensiH, Ixvi, 26, 27. lineatus, Ixii, 4. Niagara, Ixvi, 28, 29. SXEPHANOfiONIA. actinoptycus, Ixvii, 6. Californicnm, " 11, 12. polygona, " 8, 16, 16. Stephanopyxib, aculata, Ixii, 5. apiculata, Ixii, 16. appendiculata, Ixii, 12-15. Campeachiana, Ixvii, 9, 10. 8TEPHANOPVX1S. corona, Ixii, 1, 6; Ixvii, 20. craaBipina, Ixii, 8. ferox, Ixvi, 5, 6, 7. limbata, Ixvii, 7. rudis, " 21. Bpino, Ixii, 2. flpinocissiraa, Ixxxiv, 5. Huperba, " H, 9. turgida, Ixvi, 1, 2. turrip, Ixvi, 3, 4. Stictodesm is. craticula, Ixix, II. 8tictodisi;u8. Californiciis, Ixxv, 5-8. • Grevillianus, Ixxi, 8. HardmanianuH, Ixxv 3. Kittoniunup, " 9, 10. simplex, " 4. ? " 13-15. Stuiatklla. unipunctata, ii, 1,12, 13. Surirella. anceps, liii, 24, 25. angusta, lii, 16, 17. apiculata, liii, 9, 10. arctissima, " 27. Baileyi, " 22,23. Beldjeckii, " 4. bifrons, liv, 2. biseriata, lii, 1, 2. eampylcxiiscus, cviii, 13-15. cardinaliH, liv, 6. cocconeis, v, 10. crenulata, Ivi, 5. cruciata, lii, 6, 7. crumena, liii, 5, 6. delicatissima, liii, 17. elegans, i, 1 ; liv, 1 ; Iv, 3, 10, 11. euglypta, liii, 20, 21. fastuosa, xxxiv, 21 ; lii, 10 ; Iv, 5. Febegerii, Iv, 1. flutuinensis, lii, 9. gemma, 11. Geroltii, Ivi, 3, 4. inducta, liii, 14; Iv, 2. intermedia, liii, 26. l(pvigata, Iv, 12. leptoptera, Ivi, 2. lio8oraa, v, 6. Mexicana, liii, 1-3. I 46 iNDi;\. I I SURIBKLLA. micTot'ora, liii, 11. ininuta, " 18, 19; Ivi, 8. Missiusippica, v, 5. Molleriana, lii, 14, 1"). nobiliH, cxi, 11. Norwegifii, lii, 4, o. oblonKU. " 12, IS. ovatn, liii, 15. 1(>. ovatis, liii, 7, 8. pan(iuriforiiii>', Ivi, 11. piik'hra, cvii, 7. Ratrayi, Ixix, 10. recedpns, lii, 3, 8. reflexa, Ivi, 1. rfgina, Iv, 7. robusta, liv, 8. Saxonica, Iv, 4. sentiH, liv, 4. spirtClis, liii, 12, 13. spblendidn, i, 2-G; liv, 3, 7; Iv, 8,9. striatiila, Iv, (». valida, liv, 5. Symbolophora. acuta, xxii, 7. trinitatiis, Ixxviii, 14. Syndendrium. diadema, Ixiii ; 1 1-13, 38. Synedba. acus, xli, 2-4. acuta, xli, 21-23, 3(». amphyrhynchus, xli, 15. biceps, " 13, 14. capitata, xxxix, 5. XJhasei, v, 1, 2. crotonensis, xli, 19, 20. crystallina, xxxix, 2, 3. Danica, xl, 28-30 ; xli, % 6. , fulgans, xxxix, 4, 9. Gallionii, xxxix, 10, 11. Goulardii, xxv, 18, 19. investiens, xli, 27, 29. invertens, xxxix, 15. lanceolata, xl, 21 ; xli, 9. longiceps, xl, 31. longissima, xxxix, 7 ; xl, 32. obtusa, xl' ■. offinis, " 10-12, 33, 34. onyrrhynchiis, xxxix, 12. pulchella, xli, 16-18, 26. Hynkuua. robuHta, xxxix, 1. rnnipcns, xxxix, 13, 14. spatbiilifeni, xli, I. Hiiperiiji, xli, 24, 2"), 32. ulna, xxxix, 8, xli, 31. nndiilata. xxxix, (i. valt'iiw. v, 13. vanoliciiii', xxxix. It!. vitrea, xli, 8. Syrinoidium. Americana, Ixiv, 38, simplex, " 37. SYSTKI'HANKA. Kaena, Ixiii, 7, 'Iabem.akia. feiieHtiata, I, 1-6, flocMilosM 1, 7-11, nodoHn, Ixviii, 21, robuHta, Ixviii, 22. TkBI'SINOE. Americana, Ixiii, (». intermedia, Ixxviii, 1, 2. magna, Ixi, 7. minima, Ixi, 12. miisica, " 6, 13-15. tetragramma, Ixi, 8, 9, 10. 11. Tessela. internipta, xlviii, 14. Tetracyclus. emarginatUH, 1, 12, 15, 16. lacustri,^, I. 13, 14, 17-20. TOXONIDIA. Gregoriana, Ixix, 12. Tricekatium. aculeatiim. xxv, 21. altermanf, c, 16, 18; cvi, 2. amblyceroH, Ixxvii, 3. Americanum, cv, 7; cxi, 18. amoeniim, ci, 14. amphiletras, civ, 2. antillarum, ci, 1. arcticum, cv, 5, 8 ; cvi, 7. biqnadratum, civ, 10, 17. Brownianiim, ci, 10. bullosum, c, 3. Californicum, xcix, 7; cv, 13. Campeachianiim, ex, 2. cinnamonium, Ixxv, II ; cv, 18. condecornm, cii, 6. consimije, xcix, 10; cvi, 6. !- INDKX. 47 'rilUKKATIUM. iliiliiiiiii, v\'\, 13. ♦)lff;aiiH, I'i, 6, 7. KlirenluT^ii, dv, 13, 16, fnviiH, xcix, 1, 2. tiniliriatiiiii, xcix, 34. FiHclieri, cii, 8. franlioli? cvi, 9, II. uraiulf, civ, 1. Uriin, xcix, 5, 6. Ilarrisonianiini, c, 13, 14. lIoil|)riiiianuiii, ixxviii, 8, 9. lieternporimi, c, (>. inik'iitarum, Ixxviii, 7. in**if>;atis, xfix, 8, i), 2; ciii, 4. interpiinctatum, c, s. irrej^nlare, c, 8. jiicatense, cii, 4. Kainii, ixxviii, 10 ; civ, S ; cv,lC Kittonianiim, ci, 2. litliodismium, civ, 18, 19. Marylandicuni, ci, 8. menihraiiaceum, cv, 0. Monlercyii, cii, 1 ; cvii, 6, 9. niiricatiiin, cii, 7. ()bli(ium, cvi, 10. ohscurniii, cii, 10. obtiisiiin, civ, 7 ; cviii, 3. ornatum, ci, 15. paralleliim, c, 11, 12, 15. pentacrinus, Ixix, 6, 7; ci, 16. liileuH, cviii, 2. piluluH, cviii, 1. punctatiim, ci, 9, 12. TltlCKHATltlM. <|na(lran|{ular(>, cvi, 8. reccptum, ci, 13. retina, cv, 17. reticuhini, civ, 5, fi ; cviii, Ifi. robiislcm, ci, 11. scituliim, cvi, 1. Hculptum, " 3,'); cxi, 4. HeceruenShmilH rfud Plate FiK. U), 17, 18, 11, Itf, 20, Hi, 'i'i, 'Si, itj; ■■\ 11, II, 12, 18. 4, 14, 9, 10, 14, 15, 25, H, 24, 25, 2, 4, 4, 15. 21, I 20, 10,11, i 1, 20, 17, 6, 3, 11, canalictili. Ixi. 8,9, cyinltifiTa. ixii, 4. coHeu'loniiis. Ixii, [ ^ Cii'sareie. Ixii, 17, Newlwryi. ixii, Ixli, 1 17. );rii('iliH. 3-R, nermii^na. MnHtogloia. Ixiii, 9, 10, Ixi?, 2(;, 28, 2it. exempta. ixvli, ixviil, 21, permagna. 1.5. IH, producta. 18, 19, ucuminiita. ixx, 8,9. major. , liriiosa. : Ixxi, I, Ixxv, 11, HimulatiH. 1 Ixxx, 9, permagna. i Izxxi, 4, eleganH. Ixxxi, •A HtauroneiformiH. Ixxxiv, 3.4, Olivaceum. Ixxxv, 9, exllis. obtUHatuna. Ixxxv, 18, Ixxxvi, 4, CeratoneiH. Ixxxviii, 5, Liiidheimerii. xc, 12, (liniereKramma. xcv, 9, fulgenH. ^, 9,10, investiena. \ 17, lanceolata. 6, ttuminensis. cv, 18, Gregorianum. cvi, 10, subtilisHima. cvii, 8,10, eonstruens. cviii, 5,6, ilelicatiHsiina. 1 GuatemalensiB. cviii, i 7, Hiibtilis. cix. 1 1-5, Btellilifera. 'cxii, : 7, .SliDiiii! read tetniKramma. HtepiianodisciiH. aciileata. Pyxidioula. comprt'twa. vuriitbile. baoillu.li. bifidn. Pyxilla. polygona. Colletoneiua. parvuluH. pnlcher. cinnamotneuiu. SCIllptUH. iirachne. Moroniensis. RaphidcxliscuH. EhrenberRii. flpiniferufi. oeiilus. iCalifornica. Iheleroporus. Mobilensis. trisulcuni. secernendum. {Condecorum. icinnamomenm. obliquum. Mastogloia. 'Cymatopleura, elliptica. ICalifornica. ! nervosa. {Subrotundatuni. The fore■ '/ ?5 PLATE I. Figures maKnifled m) <\\Mneion. Fig. I. SuHiRBLLA Ri.RTiANa, Hhowing the ningle nucleiiB and the radial distribution of the enduohrome " 2. SuRiRBLLA HPI.KNDIDA, showing the two nuclei and the germinal (?) dot. Also the distribution of the endochromo in the cannlicnli, ' and the arrangetnctit of the lobes of the endochronie with re- garil to the germinal (?) dot. Fig*. 3, 4. The sporangium of the Surirella Splendida after the complete fusion of the endochrome ; the valves of the parent frustides adhering. " 5, 6. HuRIRfSLLA 8PLBNUIDA, early stage of conjugation ; the fusion of the two endoohromes resulting in the enlargement of the in- ternal contents, and the separation of the valves of the frustules which adhere to the mucous mas^ of the sporangium. Fig. 7. Epithbmia ventricosa, Thallus containing matured frustules and sporea the same as are found in the diatom itself. '" 8. Thallus containing several diatoms in early and later stages of de- velopment " 9. Two diatoms (Navicula) conjugating and surrounded by a gelatinous covering: the valves of frnstule separated and the endochronie contracted into spherical masses. Cyhbella, phases of growth of the sporangium in its mucous envelope. Process of division and multiplication of diatoms; a Navicula; P.P., the siliceous epiderm; G.O., the sides sliding one over the other; A., the nucleus ; B. B. B., endochrome surrounding the spore or primordial cell ; D. D., central cavities. 14. A., (he spore dividing and the end of the epiderm (P.P.) sliding apart. \K A.\ , spore fully divided and the frustule separated by forming dividing membranes ; thus there are two frustules approaching coiu»»J^t«» develo|>ment. 10-12. 13. «. » i i PLATE ir. Klgures miMrnilled fttKi dlaineterM, Fig. 1. Amphihr'ra (Aiiipliipleiira) Livulneimeri, \nr. (rriin. Oregon, Tey .s, etc . T. K M.S. IM77. p. 17.). " 2. !*i,eitfj8I(;m.\transvkh,s.\le,W. S.:S. B. D. 1 1. p. ltd, Sm. Sp.T.4ir}. " INTKHMKDIIM, W. S.; ,S B. D. 1 p. 64, "21, f. 200, Sni. Sp. T. 40'). Ami'hii'Kkba i'ii,(!HKA, Bail, front and side view; Bail M. (). p. ;!H— 2f. 1(5; V. H. 29:\ (. 1,2. i.EPiDoi'TKRA, Greg. T. M. S. l»^l, p. 76. 1, f. mt ; V, 11,22, f. 2, 3; Sm Sp. T. 2;!. " HYALINA, Eiilenst. Probably a v;ir. of A. Paliidoxa, W. S. ; also very near Amphora intermMin, Lewis* ; lor Grev.'.s fig. v. V. H. 22, f. 17. " iliuiueterN. Kig. 1 . A MPHORA EwKEt^i.v, Elirh., 1872, PI. 2, f. 20 ; Schin. At., 28, f. 18-15. 2, " VARCIMKN, Grun., Schin. At., 27, ('. ;")7. i.AEvmsiMi':, Greg., H. L. 8., in lienn, p. 78, No. 81, 1 f. 14. " BKiiBBA, Gnin., Schiii. At., 2f>. f. (id. (57, ft»'. " RicHAKDTiANA, Gmn., H. I, S., LeiiH, p. 84 No. 62; Schiii. \i., 89, f. .{S-.'Sa. Doiiiiti'ully un .Amphora. " CYMitiFFioRHA, Git'u;., H. L. S., Lens, p. 85, No. fi'^, 3, f. 2fi; Sclini. .\t., 2"), f. 17-11>; 26, f M8; W, f. 18. " coi"F.«K()i(.Mi8, K. H.. p. 108, 5, t'. ;{7, H. 1.,. S., Lens, p. !<'J^, No. aS, ;{. f. 17, Schiii. At., 2ti, (. !yt>-i)H. '• INFLATA, Gmn., Hehin. \t., 2r), f. 29, 30. " LiBYCA, Ehrl)., eomp. Pi. 2, f. 14. ARKoi.ATA, (inni., S(>Jun. At., 39, f. 28. " LANcKoi.ATA, Cleve., M. .)., 1874, p. 25(», 8, f. Ji; Sclini. At., 2.'), f. (i. " Cymhikfkra, vide, lO, above. " tOFK.KKORMIS r/(/t! 1 1, ii' ove. C1.KVIA, A. Selun. At., 2o, f. 40-48. " EvLKNSTKiNii, tjinn., Sflini. .\t., 2."), f. 1-3, v. nearly allied to .\. lanceolata. Dklhhinea, L. W. B.; B. J. N. H. VII, PI. 1, f. 1, Lens, p. 73, No. 22, 1, r. l.-i : Hilun. At.. 40, f. 25-27. DUBIA, Greg.. H. L. S., Lens, 80, No. 42, Sehni. At., 27, f. 2()-2(J. ''. ciNciUi-ATA, Gleve., Schni. At., 2(5. f. 17; I. M., 1879, p. 29, 2, f. 15. (iRKViLLiANA, Gre]ir., T. M. S., 1857, p. 73, 1, f. 36, Lens, p. 77, No. 32, 2, f. 9, rampeaehiana? (irun. ovAi.is. K. B., p. 107, "), f. 35, .39; S. B D., p. 19, 2, f. 26, II. L. S., Lens, ,H0, No. 45, 2, f. 17, S«'lini. At., 26, (. lOtl-111. Figf*. 33, 34. " KOH.MosA, Cleve.. S. lun At., 27, f. 58 ; 28, f. 6, 34 ; 39, f. 2. F'iff. 35. " .JHANiLATA, (ire!.r., Iront view? Scbm. At., 27, f, 67; small form, A. ;;igantea, Griin., Gulf of Mexico. Fi^s. 36, 37. " fUAssA, (irejf., H. L. S., Lens, 7(i, No. 29, 2, f. 5, T. M. K., 1857, p. 72, I, f. 35. " 38,3!). " GRi'Nnf,ERii, Gmn., Sehm. At., 28, f. 24-27; 39, f. 25. I( 3-6. FijJB 7,8. Fig. !». 41 Ht. (( 11. Figs 12, 13. Fig. 14. . 1 15. a 16. Figs 17, 18 it 19,20 Fig. 21. u 22. Figs 23, 24 11 25, 26 Fig. 27, kf 28. »i 29-32. -i> n I'lat.. IV . .\ l\ KigB 1,2. Fig. 3. (I 4. ti 5. ti 6. ii 7. Fig8 8,y. FJK. 10. 11. i( 12. *1 13-15 " 16. " 17. ' 18. " 19. " 20. •' 21. " 22. 23. 24. 25. PLATE V. Ftgiireii ma([niI1<'d fiOO dluuieters. SvNKKKA Chaski, Tliouiau ; W. ami C, 1, p. 4, 2, f. 3. A var. of S. longiatima, 8. B. D., p. 72, 12, f. 95. .■V.Mi'HU'KcKA ELEGAN8, Greg., T. M. 8., 1H57, p. 10, 1, f. 30; H. L. S., Lens, p. 73, No. 19. 1. f. 17. Amphkka CUUA8, Ehrb. Mik., ti, 2, f. 13; H.- L. 8., Lens, p. 73, sub No. 22 ; p. i<0, sm6 No. 45. SuKiKKLLA MiswissU'PicA, Ehib. Mik. 35, A. 8, t'. o; MiHsiHsippi. " uViSOMA, Ehrb. Mik., 33, 14, f. 25, Connecticut, prol». ably one of the platfs of RbitlHloneoia. (Jooi'O.NKSs uKMMATA. Ehrb. Mik., 37, 3, 2, Oregon. CoccoKEis RHOMBIFRHA, Bail, and Harv., ;>. 175, 9, f. 3, 4, CaliforniH. yuRlRELi.A cuoco>'Ei3, Ehrb. Mik., 3.'>, \., 8,3; u dubiou« form, not u Siirirella, nor a ('occoueis*. CocKJuNEis, Ki'XiALis, Grev., M. .1., 185V'. p. 156, 7, f. 1 California guano. CocooNKis SDLCATA, Bail, ami Harv., p. 175,9, f. 5. Amphjpkora viTREA, S. B. I)., Vol. 1, p. 44, 31, f. 270; V. H , 22, f. 29, Mobile, Ala. D1MKHKGR.4..M.MA Nov*: CiKSARjKA, (fruKtuleN attai'hetl ) Kain and Schuitzf, Bot. Bull., Mar., 1889, Vol. XVI, No. 3, artesian well, .Vtlanlic City, N. J. Fkawilaria Krkmontii Ehrb. Abh., 1870, 50, 2, 1, f. 5, of doubt- ful value, probably a hoop of mmie diat^>ni, Salt liake. Synkuba VA1.EN8, Elirb., Prit., 782, 12, 44. t^AGii.AKiA VENTER. Ehrl). .-Vbh., 1869, 1, a Mexico. Probably merely a htM>p of Oilontidiuni. Fra«4Ilaria NEWi,£Rui, Ehrb. 1870, 5C, 3, 1, 12, Nevada. A doubtful form, may be a Biblarium. Kraoilaria inflexa, Ehrb., not a good Hpecinien or species; probably a hoop of Eunotia. l>IMKR^xjRAMMA Novj*: i:jE»\HM\, K. and 8., (fruKtultw detached) Typ. form to right, var. ObtUHa to left, Bot. Bull. Vol. XVI, No. 3, 1889, artesian well, Atlantic City, N. J. UlMEREfiRA.MMA FULVUM, KalfN., V. H., 36, f. 7, 8. Mabtogloea apk.ulata, S. B, 1)., M, p. 65, 62, f. 3, 87. EnYomogakteIr Woodwarwii, Ehrb. Abh., 1870, var. Culifomi*. Probably a form of Amphora. Plato \' 1 Fig. 3 (■ 4. « 6. Figs 6,7 « 8,9 Fig. 10. « 11. i( 12. i( 13. PLATE VI. Figures miigntfled 500 diameters. Figs. 1, 2. CoccoNEMA LANCEOLATOM, Khfb. Mik., 39, 3, f. 17, etc. S. B. D., r, p. 75, 23, f. 219 ; Sclnn. .\t., 10, f. 8-10. (Trannles figured, not coarse enouKh. CoccoNEMA Mexicanum Ehrl). Mik., 3:^, 7, f 6; Abh., 1869, 2, 1, f. 1 ; Schm. At., 10, f. 3.', 33; 71, f. 82. Cocconema Janischii, Schm. At, 10, f. 3-1, 35; 71, f. 81. Nearly related to C. cistula. Cymbei.la CI8TULA, Hep., Mik., 38, A., 20. 1. 5; 37, 3, f. 3 ; S. B. D., J, J). 76, 23, f. 221. Schm At., 10, f. 1-4. CoccoNKMA PARVUM, W. S., s. B. D., I, p 76, 2^:, f. 222; 24, f. 222; Schm. At.. 10, f. 14, 15 Cymbblla cymbiformis. Brt-b., Ai. Fal., p. 49, PI. 7 ; V. H., 2, f. 11. Cocconema lanceolatum, vide f. l-'^, above. Cym BELLA CISTULA, vide f. (), 7- State of devi-lopment. Cymbella ventricosa, Ag., < onsp., p. 9; K. B., p. 80, 6, f. 16; Schm At., 9, f. 32; 7'-?, f. 11. " 14. Cocconema lanceolatum, W. S., in vegetative state, S. B. D., p. 75, 23, f. 219. , > I'lul.M. r KigH. «, 10. FiK. 11. Figs. 12, 18 Fig. 14. t( 1.'). FMiATF vrr. FiKiircH iiiiiKnlflml .'lUi (lluiiiitl'i»-, FIr. 3. " EHaENBKHoii, K,K.. K B., p. 7}», «, I. 11 : S«-hm. At., i*. f. ((-9, 1«-18; S. H. I).. 1, \,. 17, 1'. (. 21. Figw. -1, •'). " iiA.xTU()iUFX, Kg , K. B., |i. 79, 0, f. 4: Nclun. At., H, f. 1, 2, 72, f. 12-14. V. H., -J, I'. S; (. 4, v. lu-ar C. Innceoiatii. Fig. tl, " Uki.vktua, Kg., K. B., \>. 79, C. f 13 ; .s. B. 1)., 1, p. 18, 2, f. 24; Scliin. A«., Id, f. IM, 21 ; V. 11., 2, f. 15. " 7. " XAVKiLiKOKMis, Aufrs., Heili. ("i)ms|i., p. iOS, 1, f. ;'., V. H., 2, r. f). " 8. " i,Kri'(K:EU«)8, Kg., K. B., |). MSt. (I, I'. 14. Kill), .s. {)., p. 22,7, f. 14; V. H.. :{, f. 24. i:x*is.v, Kg., K. B., p. 80, «, f. 17. Htlmi. Ai.. 71, (. ;{.".. 36. More tlian usimlly roxtrHle. " Kamtmchatk A. (irim., Moll., T., p. ;i, 2, Ut, Sohm. .\i., 10, f. ;51. " (iA8TRoini'>, Kg., corijtigiiling antl developing in gelsi- tinoiis envelope. " N'AVKliLU'dKMis, .ViuTs., siune an tiunre 7. " AMriiicGiMi.vi.A, Niug., fSflini. .Vl., !t, f. (!2, til, (it!; 71, r. .')2; v. H., 2, I ti. " lU. " cusi'iDATA, Kg., K. B., p. 79, 3, f. 40, H. B. D., I, p. 18, 2, f. 22; Sclnn. At., 9, f. 50. '),\. of). FigH. 17, 18. " sTOMATOPHOHA, iiniu., Hc'liin. At., 10, »'. 28-30. Fig. 19. " I'ARVA, V. H., 2, f. 14. ( C(K'conemti parviini.) " 20. " t:iJ8Fii)ATA, var. from (.'unuda, for retereiiee8 vide f. IH. " 21. " KiiRENUEKCiii, Kg., a xiuHller form than f. 3, above. Nearly allieti to eiiHpidutu. " 22. " .MAriiLATA, Kg., K. B., p. 79. t)7, (. 2, «. B. D., 1, p. 18, 2, f. 23: V. H., 2, f. 1«, 17. " (iAHTROiDEH, Kg., comp., f. 4, i"), and 12, 18. Amkru;ana, a. S., Sohm. At., 9, f. 1.^ 2tl. I'roliahly a var. of Ehreid)ergii. " KhkenhkH(jii, forma minor. Kg., eomp. f. 3, 21, aliove. (mA«'iU8, Kg., K. B., p. 79, (i, f 9: Kal.. .S. D., p. 22, 7, f. 12; H. L. S., Sp. T., No. 119. '■ ruRGiDULA, A. H., Scliin. .\t., 9, f. 2;i-2(». «'VMBiFORMi8, Brel)., Alg. Fal., p. 49, J'l. 7 ; V. II., 2, f. 11. " 29. •• .YsTiii-A, Briin., A!., p. .'iS, .1, f. 18., V. H., ]>. i\4, 2, (. 12, 13. " 30. " \ll. PLATK VIII. , PlKurcN iiuiKiiUleil >'iiu,illiiiiiiMi'ri>, li 3. 11 4. • i fi. II u. KiK. 1. SruHoNKiH I'DNfiATA, Kg., K. K., i>. mi, -21, (. it; S. B. D,, I, |., HI, 19, f. 1S»; H. L. S., Sill. Sp. T., Xo. 4»8. " 2. " i)ii,ATATA, W, S., M. B. D,, I, |i. «0, )«, f. 191; Kah., E. D., p. 24>^. " i.iNKAKiB, Khrl)., 8. B. I)., 1, \>. (10. l!i, I. li»H. ANCKitj, Elirl... K. B., p. lo:., 29, f. 4; kii».., S. I)., p. 48, 5), ♦'. 14; S. H. D., I, p. »(••, 19, f. I9wer, in t^eliilinoiiH tiibf. VENTBicx)8A, Kg., Schin. At., 1(», ('. 59; 71, f. 13; V. H., 3, f. 15-17. •' CAi-SPlTOeUM, Kg., Rab. 8. I>., p. 24, 7, f. 5 ; 8. B. I>., 1 1, p. 68, 55, f. 346; 8(hin. At.. 10, f. 57. 58, 60, .62. '• AuERWALUii, Rab. 8. D., p. 24, 7. f. 2. Pn>bably only a variety of fig. 2(t. TRIANGULA TVM, Kg., 8chin. At., 10, f. 54; 71, f. 10. Cymbella gibba of Bailey. HAKADOXUM, Kg., K. B., p. 82, 22, f. I, Ral>, 8. D., p. 24, 7, f. 3; Schm. At., 10, f. 67, 69. , " Prostbatom, RalfB., Rab. 8. D., p. 24, 7, f 1 ; 8. B. D. II, p. 68, 64, f. 345; 8chm. At., 10, «. 64, 66. £Tidently Tarietiet* of fig. 23. FigH. 8, 9. Fig. 10. 1. 11. 11 12-16 11 17. Figs .18, 19 FiK. 20. • < 21. - 22. 24. I'lutft \ 8^*-; i i. ! I'LATE IX. Viii. 1. Amimikra ( oki'k.kkohmis, Ku., K. H., p lOs, 5, f. ;^7, H. F-. S.i Lens, p. s-2, No. r,;-,, :!, f. 17; Sdim. At., 26, ('. Sd-lS. " 2. " IIVAF.INA, Kr., p. lOM, ;{(», f. IS, II. L. S.. Lens* p. 74, No. ' 24, 2, f. 2 ; W. H. D.* I. p. I'.i, 2, f. 2M ; Scliin. At., 2(5, t; 52-"io. " ;!. " -OSTAIA, W. S., S. n. 1)., I, p. 20, :!0, f. 253; H. I.. S., Lens, p. h:!, No. Tm, 3, f. 2S. " 4. « i,AKVis.siMA, < ires., I). C, j). II, 4, f. 72 ; H. 1.. S., Lens, p. 7:5. \o. SI, 1, I. 14; V. H., I, f. l.i. " ."). " t.iNKoi.ATA, Khvl.., Mik., i;{, I, r. lit; Rai.., S. I)., p. .".fi. '.I, f. 9, 10: 11. r.. S., Lens. p. 74, No. 2.S, 1, f. 22. " (5. " OFITRTA. L. W. B., H. .1. N, II., p. :?4S, r. A H. ; H. L. S., Lens, p. 77, No. .'vl, 2, t'. 12. " 7. " i-i's.A, A. .S., SfliDi. At.. 27. I'. 1 ; H. L. S.. Lens, p. S4, .No. .'•!>, 8, I'. 29; .Slim. At., 2«, I'. SI. " 9. " HiNoDKs. vitr. interniptH, tirnn., Schin. At., 2.'i, f. NGAT\, Grun , Schm., .\t., 50, f. 27-29, merely a form of N. viridis. iiECURRENS, Kg., K. B., p. <.n>, E. Mile., 11, f. 28 ; Schm. At., 45, f. 29, 30. NtiMMULABiA; Grev., Cal., p. 29, 4, f. ♦>; Schm. At,, 70, f. 37, 38. PAPULA, Grun., Schm. At., 7, f. 45-48. i.ANCEOLATA, Kg. Same as fig. 32. Kg.'s form has «.nk. B. D., p. 19, 3, (.4. ' <(UtNQUKNODi«, Gnin., (a var. of mnticHj 1860, p. 522, 1, f. 33; 18«3, p. 149, 13, f. 9; V. H., 10, f. 21. KroENiA, A. S., Schm. At.. 8, f, 44, 46 ; O'M. (. I)., p. 395, 33, f. 17. LiTTORALls, viir. Donk. B. I)., p. ">, I, t". 2; fk'hm. .At., 8. f. 24. r.iTTORALis, Sohm. At., 7, f. 12. V. H. ; B. S., f. 25. CRYPTOCEPHALA, Kg., K. B.. p. 95, 3, f. 20, 26; Rab. S. b., 6, f. 71; V. H., 8, f. 16. '• r»irroNEiFORMis, Gre^., M. J., 1856, p 6, 1, f. 22, S. B. D.. II, p. 92. SKRIAN8. fmnHviata, Breh., K. B., p. 92, 30, f. 23 ; 28, 1". 43; Rab., S. D., p. 38, 6, f. 61 ; S. B. I)., I, p. 47, 16, f. 1.30. PirsiLLA, W. H.; S. B. D., I; p. 62, 17, f. 145; V. H., 11, f. 17. '• viRiDULA, var. minor Kg., K. B., p. 91, 30, f. 47; 4, f. 10, 15; Sohm. At., 47, f. 48, ,53, 56. ' RHYNCOCEPHALA, Kg., K. B., p. 52, 30, f. 35. S. B. D., I, p. 47, 16, f. 132; Schm. At., 47, i. 28, 29. aRACTMS, (var. SileHiaca) Ehrh., Mi<., 39, 3, f 85; 16, 3, f. 29; 16, 1, f. 14, a.b., etfi. (iRAriMH, K. B.. p. 91. 3, f. 48; 30, f, 67; Rah., S. H., p. .38, 6. f. 64. " sE.nTNrTA, A.S., Schm. At., 67, f., 50; 70, f. 56, 66. TKFLEXA, Ralfr., Schm. At , 46. f. 69-72. " Hrkbis.'v^nii, Kg.. (Pinn. Rtanroneiformis, W. S. ) K. B., p. 93, 3, (. 49; 30, i'. 39; Schm. At., 44, f. 16. " •_':. " nt-niA, Ehrh., Mik:, 39, 2, f. 82; K. B. 96, 28, f. 61 : Schm. .\t., 49,f. 11,24. " 2K, " TABELLARIA leptogongyh., Grnn., Ehrh., K. B., p. 98, 28, f. 79, 80; Sclim. At., 43. o. FigH., 29, 80, " Bacilmtm, and var. Ehrb., Mik., 38a, 20, f. 3, 29, 3, 1. 81 ; 27, 3, f. 8. Sill. Jonr., May, 1861, f. 4t), K. B,, p. 96, 28, f. 69 ; B. I. N. H., p. 336. f. 20. H 3. U 4. II 5. Figs 6, It;. 4( 7, 17. t( 8,9. Fig. io. f( 11. U 12. (i 13. ti 14. l< 16. Figs. 18, 19. Fie. 20. I< 21. U 22. it 23, U 24. (t 26. tl 26. I'lalr X. I t I Fig. 31. 82. « 38. C( 34. l< 86. l< 36. i( 37. <. 38. K 39. i< II 40. (1 11 41. II Figs .42,44. II Fig. 43. ii 11 45. II II 46. II 11 47. II II 48. II . 7, 2. ('. 2. The ly()- ical fiiriii is Hoinewiiat iiu'iiivcd ; W'iiiie Mountain. '• Uki:kn'1,anuk'A, Cleve., N. L. I\. D , p. 7, 1, I". \:i, Davis Strait. " ('KUtiATA, Chvc, N. L. K. I)., p. «, 1, r. II. '■ I'lAiRiDANA, Cleve., N. L. K. D., p. tl, 1, f. 10, near N. fliiiiiiiie-isis (irnri •« Fi;m:(iKii!i (kve , N. L. K. I)., p. 9, 2, f. 21. Perhaps a var. ot' N. .Vnulica, Rail's. '' I'ENSAcoi.A, (. leve., N. L. K. I)., p. M, !!, f. .">'.•. MAKoiNi'LATA, t.ieve, N. L. K. !)., II. ;^, r. 29. " I i.UTHKNsis var. inine.sta, (JreK , 1). ('., p. J'-, 1, t'. 2, I'rit.i p. 9(19, 7, f. r.',. (JKMINA. Khrh., Ber., 1S40, p. 19; Seiitii. .\t., ]?,, f. 4-9. May he a var. of Hoinhiis, Richmond, \'a. " iNTKKi'o.siiA, Le*is, VV. M. I>., p. 1,S, 2, f. 19; Sni. Sp. T.. No. 25.S. May he a var. of N. Hrina. " OitEtio.vicA, Kg., K. S. .\., p. 71 ; Prit., p. 907; .Ahii., 1«70, 2, 1, f. 10, 11. " MAKOINATA, Lewis, {MoHiHjfoia) Lewis, X. and R. i^p., p. 2(), 2, f 1 ; Delaware River. ' roLVONcA, hreh., Ral)., S. I)., p. 4!, J.,ewi.s, N. and R. Sp., 2, f. 7; V. H. .-v., f. 14. " DiiuiYNcHUS Eiiri). Mik., .'i"), .\., 14, f. ;i. Kah., S. D. p. 40, (i, f. 4S, Donk., H. D., p. 29, 5, f. ;{. S ! I 'Into XI ■if .11 11 I " 2. " 3. " 4. " Q- " S. PLATE Xn. KiKures inaKnltlecl TiOO illuinetcra. FiR. 1. Navicui.a tahkllakia, Kk; K. B., 98, 28, f. 79, 80; Prit., p. 896, 12, f. 21; Hcliin. At., 43, f. 4. •' SUBNIIDA, var. A. H., Sclmi. At,, 12, f. 44. " DiPLOSTicHA, (Jnin, Sdiiii. At., 13, f. 25-30, (iiilf of \Ji'.xi('o, etc. " INTERRUITA, Bnil., viir. Microstiiurnin, O'M., I. I), p. 354, 30, {. 36. « Hi'i-KNDIDA, (iren, viir. T. M. S., 1866, p. 44, 5. f. 14; Sohni. At., 12, r. 31-35; X^, f. 31-34; (59, f. 22, Gulf of MexicM. " KNTOMoN, Kg., K. H., 1). 100, 28, f. 74, Honk., B. D.. p. 49, 7, f. 5; Sclim. At., 13, f. 43-46, Ciinip. Buy. " MUscAKFoKMis, (triin., Sclim. At., 13, f. 42,47; v.ir. of (iidvniu, Ciuniifiieliy Buy. " (IKMINA, Khrl.., Her., 1M40, p. 19; Schtii. At., 13, f . 4 ; (ii 111 peachy Buy. " SAi-VA, A. H., Hcliin. At., 46, f. 23, Cunip. Bay. VACiLi.ANS, A. S., Helim. At., 8, f. 61 ; 8, f. 42, 43, 52, V. H., 9, f. 9 ; Camp. Bay. " Smithii, Brel).. S. B. D, II, p. 92, Sdini. At., 7, 19. Kre(iueiit ijutrine. " DiDYMA, var. Kk., K. B., p. 100, 4, f. 7; S. B D., 1 p. 53, 17, f. 154; Sdmi. At., 13, f. 1-3; Leiin, Vol. II, p. 235, 4, f. 8. " HKK't'i.ATA, (Jriin , Sclim., At,, 70, f. 9, 10. Camp. Buy. " muRiioMBUH, A. S., Sehiii. At., 11, f. 21, 22; 69, f. 9; (Jnlf of Mexico, etc. " CAMPYi.ODiscus, (iruti., Sclim. At., 8, f. 9, 10, 12, 70, f. 64, 65. Camp. Bay. " cuHPiDATA, Kg., K. B., p. 94, 3, f, 24, 37 ; Rab., 8. D., p. 37, 5, f. 16 ; S. B. D., 16, f. 131. " BOMBOIDKS, A. S., var. Schm. At., 13, f. 36-40; V. H. B., f. 19. Camp. Bay. " CARDINALI8, Ehrb., var. Not as large as fig. 45, PI. 9, Schm. At,44, f. 1,2. " ScHMiDTiANA, Grun., Schm. At., 48, f. 19, 20, Camp. Bay. PEREGBiNA, Kg., K. B., p. 97, 28, f. 62 ; Schm. At., 47, f. 57-60; O'M., I. D., p. 408, 34 f. 6; V. H., 7, f. 2, Utah, etc. " LONOA, Ralfs., Schm. At., 47, f. 6, 8, 10; Donk., B. D., p. 54, 8, f. 3, Camf). Bay. " FUSCA, Ralfs., Schm. At., 7, f. 2-4, 7-9; 8, f. 33-37; V. H. B.. f. 2, marine, ' susPECTA, A. S., Schm. At., 11, f. 12, 13, 25-27. Gulf of Mexico, etc. " scoLioPLEBRA, A. S., Schm. At., 46, f. 63. " LACRiMANS, A. 8., Schm. At., 12, f. 59, 60, 61, Cam- peachy Bay, Gulf of Mexico. , hclow. MAJOR, Kg., K. B., p. 97, 4, f. 19, 2<); Frit., p. 896, 7, f. 66; 12. f. 16, 31 ; 16, f. 1-6; Schm. At., 42, f. 8-10, Sm. Hp. T., No. 294. '• oiGAS, Kg., Schm. .At., 42, f. 1, 4 ; K. B., p. 98. " N0BIU8, Ehrh., (K.H, p. 98, 4, f. 24; Mik., 16, A., f. 13; 15 B. (•.7; Schm. At., 43, f. 13. " viRiDi.*, Kif., same as fig, 1, uliove. One of our most coniinoM and widely (liKtrilMileii fresh water diatoms; very variable in size. " VIRIDI.'*, front views of frustules m often seen in pairs, or sometimes four or more united. I'l.ito Xill. ! : 1 ,, ip Figs. 1.2. 3,4. hig. 5. •• " 6. « " 7. II " 8. II Figs. 9, 10. a Fig. 11 ic " 12. •1 Figp. 13, 14. Fig. 15. .( " 16. II " 17. II Figs. 18, 19. it Fig. 20. <( ^ " 21. It ' 22. II " 23. l( " 24. II Figs. 25^ 26. li J^'ig. 27. " Figs. 28, 29, 30. It PLATE XIV. KiRures magnlfled riOO diamotors. Xavicula affinis, Ehrb. Mik., .39, 3, f. 79, etc. ; K. B., ]>. 70, 28, f. 65 ; 30, f. 4o, 46 ; Rab., S. [)., p. 40, ti, f. 58 ; 5. B. D., 1, p. 50, 16, f. 143. " amphirhyN(;hus, Kiirb., K. B., p. 9o, 4, f. 13; 2, f. 11; S. H. I)., I, p. 51, 16, (• 142; Prit., p. 901, 12, f. 6. serratula, (}nin., Suhni. At., 7, f. 42, 43. Cam- peaciiy Bay. KUDO.xiA, O'.M., I. D., p. 397, .33. f. 19; Sc-hni. At., H, f. 39, 40; 70, f. 71, Monterev. MARINA, Ralfs., Donk., B. D., p., 19, 3, f. 5, .Scbni. .\l., 6, f. 9, Roxbury, Mass. NiTESCENS, Ralfs., Prit. p. 808; Donk., R. I)., p. S, 1. f. 7 ; Sehm. At., 7. f. 37 11, sin 'Her form. PENNATA, N. distem, var. A. S., S;'liiii. At., 4S, f. 41-4;!. FiscHERi, A. S., (\fucul(Ua, Kdwanls), Sehm. \i , fl, f. 38, Neuse River. Smithii, Breb., S. B. 1)., II, p. 92; Sehm. At., 7, f. 19, Campeachy Bay. Ai'i(;ULATA, Breb., Lewis. W. M. D., 2, T. 7 ; Scbm. .\t., 4(), f. 56, S8, a smaller form. EXCAVATA, Grev., T. M. S. 1806, p. 130, 12, f. 15; Soliiu. At., 3, f. 22-25. Pelagi, A. S., Hchm. .'\t., 7, f. 25, 26 ; Cami)eaehy Bay. Calikornica, (irev , Cal., p. 29, 4, * 5, Sclim. At., 3. f. 1.5, 16. eu.utka. Kg., K. B., p. 98, 30, f. 55; Sehm. At., 7, f. 27-32; 54,55; V. H., 10, f. 10. Undetermined, A. S., Sehm. .\t., 6, f. 29, from tiiilf of Mexico, near small form of N. Brasiliensis, tig. 21. Bkasiuen.'!1S, Grun., 1863, p. 152, 14, f. 10 ; Sehm. At. 6, f. 19, 20, Campeachy Bay. NiTESCEN.s, Ralfs., larger form, comp. Hg. 8 above. MARINA, allied to N. imiculata, comp. fig. 7 above. Calikornica, var. Camp. Bay, Grev., Sehm. .\t.,3, f. 24. IMPRESSA, Grun., Sehm. At., 6, f. 17, 18, Camp. Bay. EXCAVATA, Grev. comp. fig. 15 above. Camp. bank. Hennkdvi, var. W. S., S. B. D., II, p. 93 ; T. M. S., 1856, p. 40, 5, f. 3; Frit., p. 898, 7, f. 69; Sehm. 3, f. 3-5; 3, f. 17, 18; Camp. Day, etc. { m .It i ". Fig. 1. <( 2. < 5. (( 6. K 7. « 8. l( 9. 10. PLATE XV. Figures magnified dUO diameters. " 11. (1 " 12. (1 " 13, 'i " 14. t( " 15. n Figs. 16, 18. i Fig. 17. II " 19. ll " 20. II Navicola lacrimans, a. S., Schm. At., 12, f. 59, «0, 61, Gulf of Mexico. " MULTIC08TATA, Gruu., 1860, p. 524, 1, f. 13; Schm. \t., 11, f. 14-20, Camp. Bay. " coABCTATA, A. S,, Schm. At., 11, f. 30-32; 69, f. 11, Camp. Bay. " EXEMTA, A. S., Schm. At., 11, f, 28, 29; 69, f. 13, 40, Camp. Ray. " PAND0RA, Breb., D. C, p. 15, f. 4, T. M. S., 1856, p. 43. 0, f. 11, Schm. At., 11, f. 1,2, 4, 8, 9, [N. crabro var.) Gulf of Mexico. " PRI8CA, A. S., Schm. At., 12, f. 67-70, Richmond, Va. " CRABKO, Kg., S. B. D., 11, p. 94; M. J., 1857, p. 8, 3, f. U; Schm. At., 69, f. 1. Santa Monica. " GiKBELii, A. 8., Schm. At., 12, f. 73, Camp. Bay, " CRABRONiFORMis, Grun., Schm. At., 11, f. 24; Gulf of Mexico. " PUELLA, A. 8., Schm. At., 12, f. 13-15; 69, f. 25, 15, California COARCTATA, A. S., comp. Sg. 3 above. CONFEf'TA A. S., Schm. At., 12, f. 46, Camp. Bay. PRiscA, A. S., ; .me as fig. 6, above. 8PLENDIDA, va/. Greg., T. M. S., 1856, p. 44, 5, f. 14, Schm. At., 12, f. 31-35; 13, f. 31-34 ; 69, f. 22, Gulf of Mexico, etc. DtMTA, A. 8., Schm. At., 69, f. 34, Santa Monica. PUELLA, A. S., same species :is fig, 10, al)ove. DoNKiNU, A. S, Schm. At., 12, f. 63, 64, ('amp bank. CHER80NEN8I8, Grun., Schm. At., 12, f. 40) flW, f. 21. OBNATA, A. S., Schm. Ai , 69, f 5, Mi-uteruy. t \ I'lHle XV I: ii I '• a. Fif,'. 1. " s. " 9. " 10. " 11. " 12. " 18. " 14. " 1"). " Hi. " 17. " 18. " 19 a 22. 11 2H. a 2-1. a 2o. (( 26. it 27. PLATE XVr. Pijjiiros mngiiitii'd "lOii (liniiii't(>fs. Navioi'L.\ Cv\lik()Hnica, viir. (hw., Ciil., \i. 29, 4, !'. ■'), Si'liin. At., 'A, f. 1"), 1(), ('amp. biink. " lltRORATA, (irev., (ill., p. '17, 4, f. 1, Schiii. At., 2, f 19, 22, 2.S. (iiilf of Mexico. " si'KCTABiLis, (Jroi;., D. ('., p. SIS, 1. f. 10; Donk., B. 0., p. 12, 2. f. .'); Sciwn. At., :'., I". 20 21, 29. " i.YRA, var. rei'ta, Ehrlt. AnuT., 1, I, f. 9; K. I'., p. 94, 2S, f. .').")•. F-lal., S. [)., o, r. lo: Sclmi. At., 2, t. Is, 2, f. 24, 25, 82; ;■!, f. 11, 12, ,1 M S.. 187^, p .-)09, 44, i'. 1, (in\f ol M.'.xiI'I., .A. S., Sclim. At , 2, f. IS Camp. hank. '' i,YE!A, Tvp., Camp. I):ii)k, Schm. At.. 2, f. Ki, comp. titrs. 4, 9, 14. Krr'i|inni. " (■(.. >KI{I, Halfs.. i'lil , p. H9S, Scliin. At., 2, t. 12, (amp. Bay. " KOHKHTSIANA, (irev., S, I'. I)., I'l.;{, .."; Scluii. .Vl., 2, r.7. " I-YUA, var. (lilatata. A. S., Sclin). .\t., 2, f. 2('), romp. Ii)j;s. 4, (I, 14, (iiiU'of Mexico. '" DisTKNTA, A. S., Sciiiim., 18(17, p. 'i-. 2, f ■".;', , Sciim. At., 2, f. 14, ( '.imp. Iiank. " DIFFUSA, .\..-l., Schm. \t., 2, f. 2S. Mexico. I'YciMAEA, K^., S. H. I)., 1!, p. 91, Sc}>:r». u , '''), ( (5, 7, Camp. liay. FOKcii'ATA, (irev, -M ,]., 1859, p. SH, (>, .. i"; .Schm. At., 70, i\ 17; V. H., 10, f. ;3, N. vSmithii var.? " i.VKA, Ehrb, siilityjiical, Schm. At., 2, f. 82, Xeiise Kiver, coiiip. tigs. 4, (i, 9, i-t. ' t'AiUNiJ'KKA, (rrui)., Schm. .\i , 2, f. 1, 2; 70, 1". 42, Camp. Ha\. Ac'U.MiN.VPA, Kails., i'rit., p. 909; O'M. 1. !)., p. 854, 80, f. 41. " IBKORATA, (irev.. ("al., p. 27, 4, f. I, Schm. .\t., 2, f. 19, 22, 28, comp. lifr. 2, al)ove. " Ai'PiioxiMATA, (irev., Cal., p. 28, 4, f. 4, v;ir. .S'hni. .\t., 2, f. 20, 21, Camp. Bay. AITS. Ki. K. B,, i>. 100, 2S, r. 7K, Donk., B. D., p 48, 7, f. 8; Sclim. At., 12, f. l(i-25; Schm. At., 69, 41, 43, 44. ' FOK ;irAT ., (irev., .omp. fig;. 18, ahove. iMiTLrEN;*, A. S., Sciim. At., 2. f. 15, Camp. hank. .s(iotilLan.s, a. S., Schm. At., 70, t. HI, (lamp. l)aiik, K> i.M-A, Kg., K. B., p. 99,3, 1. :'.(>; Rah. S [». 5. f. 10; -i. B. D., II, p. 50, 17, f. 15S " (;a i.hak,*, a., Schm. At., 70, f. 48; (Jieve., 187S. p. 5. Wkisflooii, a. S„ Schm. At . 12, f. 2(1-32, var. 12, f. 80, (iulf of Mexico. " lAiiA, var. siftnata, A. S., Selini. At., 2, f. 4, , 5, f. 6 ; ScliiTi. At., 4i», f. 2, (larger var. of .V. firviaf) New Yf.rk. " DiLATATA, Eiirli. .Mik., 3, f. 25, Ral).. S. D., j». 37, comp. fig. 7, typicul form. " coLUMN'Aiiis, i.kle tig. 1, above. DIL4TATA, var. Ehrb. Mik, 16, 3, f. 25: 8,3, a,, f. 9, Sciini. .At., 4!), f. H, 9, Maine, Mas.s. " Bleisciih, Jati. and Kab., p. 9, 2, f. 10, Sihni. At., 50, f. 22, 2'>, nearly related to N. excenlricu. AMPHlo.iMPHi-.«, Kiirb. Mik , (i, 1, f. 20; 7, 1, f 16; K. B., p. 9;^, 28, f. 40; Kab., S D., p. S8, (5. f. 47 ; Si-hm. At., 49, f. 31-.'54. Krecjuent, usually represented by enmlier turnis. 11 I'h.l.. \\ i: i I J I' I ATK XIX. I'iuiiic's iiiimnllli'cl Vni cllmnclfr- I'iii. I. N \vii'ri.\ I'miitAitiM-, A. S,, 2, 21, f. 10, S. • H. I)., HI, 1. i:{S: .Scliin. At., 4'.t, f. :! 14; var. Sub- undulala, f. Ui, Hudson River. " 10. " hi KM A, typical lorm. " 11. " KotiMO.SA. v.ir.. Same species, didcrciil t'orm as Fix. 2 al«>ve, Utah, etc. " 12. " Proditta, var.. Sclim. At., ")0, f 4i> ; Siiy s fraglick. Marine. •' 13. " Amphikiiynchi's, Ehrl)., K. B.. p. 95, 4. f. l.S; 2, f. 11, 5. B l)„ I, p, :>l, Itl, f. 142; Frit., p. 901, 12, f. (>. Fresh-water. '• 14. " NODOSA, Khrh. Mik.. 17, 2, f. 12, 13, K. B., 28. f. 82; Rah., S. 0., 41, 6, f. 8ti; .Schni At., 45, 5f)-58. Fresh-water. " 15, " PRODUCTA, var, nearer the typical form, fi){. 12, compare refs., fix, 3. Marine. " 10-19. '• Bhkhipsosii, Kk , K. R., ;i, f. 49; 80, f. 39, Rab., S. D., 6, f. 54; Schni. At., 44, f. 10-19; Sin. Sp. T., No, 249^ O'M. I. D, p. 350, 30. f. 24, Fresb-water. " 20, 21 . " mvERGEXS, Ralfs., Pi it., p. 890, Scbm. At., 44, f. 6, 14, 15, 42. Freshwater. " 22. " VAClM.AN.s A S., Scbm. At., S, f. tU, V. H., 9, f. 9. Marine. " 23. " A.MPHi.snAKN.\. Boi-K. Mik., 10, 1, f. 7; 7, 2, f. 5, etc., S. H. D., 1, p 51, 17, f. 147; Donk. B. D. p. 36, 5, f. 13. Small form. Fresh water. \1\'. il i iis ,!» ,» I I IMAGE EVALUATION TEST TARGET (MT-3) // ^>. // 1.0 1.1 tea 12.8 12.5 «Sf IS £ Iffi 112.0 IL25 III 1.4 I 1.6 Hiotografdiic ^Sderices Corporalion 23 WiST MAIN STIliT WnSTii.N.Y. MSM (71«)S72-4S03 " 24, 26. " 26. " 27. " SO, 31. DiUYMA, Kg , K. B., 100, 4, f. 17 ; 8. B. D., I, p. 53, 17, f. I.M ; Prit. p. 893, 7, f. 61 ; Schm. At., 18, f. 1-8, Marine. MoBftTA, A. 8., Schm. At., «9, f. 18, 19. Freth-water. SBPARABU.M, A. S., Schm. At., 11 «. 8, 6, 6, 7, 10, II. Marine. PZAWXW, A. 8., Schm. At, 12, f. 57, 68. Marine. IHFLATA, Kg., K. B., 3, f 66; 8. B. D., 11, p. 60, 17, f 168, Sm. Sp.T. No. 284. Fresh-water. HrrcHcwKU, Ehrb. Mik, 63, f. 11 ; 33, 12, f. 24; Prit., p. 8»», 7, 1" 62; 8cl»m. At ,49, f. 86, 36. Rather un- UHitnlly large form ; Pennsylrania waters. Ordi- nMiily a smaller diatom than N. Amphubaena,ii(Sf^. 'Y PLATE XX. FlKUreg magnified 50U diametere. ! Fiii- I. Navicula PRKi'KXTA, Ehrl)., Gre^., D. C p. 9, 1, f. 11 ; Schm. At., ;5, f. ;W, M. Marinf. Vx^x. 2, (IS). ' siNOULABis, A. S., Schm. At., 43, f. 30. a variety o( aerosphaeria, Kp. Fresh-water. Fifi;. '^- " MESOLEPTA, Ehrb., var. undiilata, Grnn., K. B, p. 101, 2S, f. 73; Rab., 8. D., 41,6, f. 7*2; Schm. At., 4o, f. 52, .");{, 70. Fresh-water. " 4. " ASPKRA, (Stauroneis), Kg., A. B., 20, f. 12, Prit., 9, 14; '"'' H., 10, f. 13: Sm. Sp.T., No. 407. " r,. " AcciiMiNATA ? W. S., tig, probably represents merely ii var. of N viridis. Fresh-water. " 6. " HEMJi-iKRA, Kg., var. macilenta, Grun., K. B., p. 99, 30, f. 11; Grim., 18<)0, p. 519, 2, f. 20; Schm. At., 43, f. 26, 2H. Fresh-water. " 7. " PBETEXTA, Ehrb., var. of tij?. 1. Marine. " 8. '• Smithii, Hreb.,H. B. D., II, p. 92; Schm At., 7, f. 9. O'M., 1. I)., p. 382, 32, f. 8. Fresh-water. Figs. 9. 10, 11. " GiBBA, Kg , 2«<, f 70; Schm. At., 45, f. 45-61, V. H., A., f. 12. Fresh-water. ,, 12, (17). " TABELJ.AKIA, (Var. macilcnta), Kg., K. B., 98, 28, f. 7. 9; Prit., 896, 12, f. 21: Schm. At, 43, f. 4. Fresh-waler. Fig. 13, " MES01.KPTA, Ehrb. Mik., 17, 2, f. 11; K. B., 101,28 f. 7.3. Fresh-wuler. Figs. 14, (16). ' Mi-aoLEPTA, var. Stuuroiieiformis, Lewis, (N. meso- tylai. Ehrb. Mik., 10, 1, f 10; Rab., S. D., p. 41, ■j, f. 6; Schm. .\l., 45, f. 52, 55. Fresh-water. " MESOJ.EPTA, Ehrb., loinp. figs. 3, 13, 14, 16. " siNOUi.ARis, vide fig. 2. OBTUSA, Ehrb. Mik., 2, 3, f. 7 ; 13, 2, f. 9, 20, 1, f. 51, etc., Abli., 1870, 2, 1, f. 37. Fresh- water. SEMEN, Ehrb. Mik., 38, A., 20, f. 2; 39, 3, f. 88, 89; Abh., 1871, 1, I)., f. 2, 3; Sill. .J., May, 1851, f. 48, 49, .Schm. At , 72, f. 1. Fresh-water. 22. " ELGlNENSis, Ralf., Prit , p. 902, also near dicephala, Ehrb Mik., 16. 1, f. 17; Abh., 1872, 1, E, f. 4; K. B , 28, f. 60, 62. Fresh-water. Kig. 15. U 18. Figs. 19, 20 Fig. 21. jl I'lul, X\, i ^ platp: xxt. Fijfnn-s inagnifled fltHl diameters. Figs. Fiir. Figs Fig. I. 2, .1 Navicl'i.a DACTYiA's, Kg.. K. B.. p. »H, 2S, f. o!», Sohm. At., 42, f. ti; \'. H., '), f. 1. Kri'sii-water. 4. " ii,\( TYi.i's, Kg., viir. siil)gigiis, A. S. Fresh-water. .">. " TAUKi.i.AHi.v. Klirli., (viir. transversfl, 11. var.), K. B., p. 9S, 2S, t. 79, S(i; I'rit., S9ti, 12, f. 21, Sohni. At., 43, f. -I. Fresh wii' IT, New York. H, 7. " KADiOf^A, Kg. K. b., 4, I'. 23; Soliiu. \t , 47, f. 50-o2; Sill. Sp. r., N, f. A., Sehni. At., 43, f. 16, lil, 22. i'resh-water. 10. " oBi.ONUA. Kg. (var., oiiria, n. var.), K. B., 4, f. 21 ; Sclini. At., 47, f. (i3-t)8; Sin. Sp. T., No. 30(). Marine. II. " A(R(>.>*PHAi;itiA, toniia majiis. Freshwater, I'lal.XXl } IM.ATK XXII. MitenilliMl ■'*)» (lluinotcrM. i Ki>;. 1. HiDi.iM'HlA TlJoMKYi. var, Ki.per, T. M. S., 1S5», p, S, 1, f. 1, 2, I'lil., p. S4H. (i, f. 10; V. H., 1)8, f. 2:1 Marine. Fij;!*. 2, S, 4. Py.mdici LA ui.oiia ia. This fi^r. copied fnmi Pritrhiird has no •' «. value; it is no iliutoni. BiBi.ARiUM (HvLoniBi.M'M). eccentricuni, Elirl). Mik., 3S, 12, f. 31. M iirine. Kijr^. S, it. Fig. 10. •• 11, " 12. " la " 14. Fiv'i*- 1"», '•'• KiK. 17. " IS. . " li>. '• 20. " 21. FiL's. 28, 24. Fi«. 2o Figs. 2H, 27. FiR. 2S. " 29. " (Styi.ohiiii.11 m) (livisnm, Elirl.. Mik , 33, 12, f.30. SvMHOLonioRA ACMTA, Klirl>. Mik.. :W. f. 21, Mic. Dictv. 43, 1". 54. Of no vaiiH'; proltalily only a frajfrnent of ii Tiiconliuni. (JoMPiU'NKMA ()UKI', F:iirl>., K. 15., 28, f. 4.",; 30, f. 44; Kab. .S. I)., i\ f. 1,-); .S. H. I)., H\, f. 129. Fresh- water. FhEi'R().MG.MA DKi.UATii.i .M, W. S., S. B. D., 21, f. 202, Frit., p. 918; Sni. .-'i) T., No 398. Fresh-water. KiMTHK.MiA Maiuna, Donk., T. M. S., I8(i8, p. 29, 3, f, 14. .Ami'Hoha PIJCATA, = (.,4 lineolata, Flhrb.) Grej(., T. M. S., 1857, p. 70, 1, f. 3; II. L. S., Lens, p. 75, No. 25, 2, f. 3; Schm. \t., 2U'rt>, • 1. 2. 3. it PRKSTIOI'IIORA, Jiin., Schrii. At.. 7<', f. 72, (= N Ornbro viir.) Miiriiu'. MAR(iiNATA, O'M. not Lewis's Marijinata wliioh is a Manloglnln. This may be ^V. incurvnto, (ireu. noMiHTW, K'k., (Jrejj. I>. C. p. 12, 1 f. 12; Sclirn. At.,69, f. 28,29; V. H. H.. f. 22. 4. If HiMiLANs, O'M., fijiiire, p. 373, 31, f. 47. Marine. O'Marii's fipm'e too lingular and Dnnkin's Hgiire too aciiuiiniite. H. L. 8. t* 5.(11. ) MBER, W, H., S. B. T).. I., p. 4«, 16, f. 133; Donk. B. D.. F.. 62, i),.l' 5 ; Sihrn. At., -lO, f. 16-18. Fresh-wiiter. ■ " 6. (. IsocEi'HALA, Khrb., E. Amer,, p. 133; K. B, p. 101; (VM. I. D.. 30, f. 31. •1 7. tl VENKTA, Kg., K. B . 30, f. 76; Rub. ^. D., 6, f. 83; Sm. Sp. T., No. 328 ; V. H, 8, f. 3, 14, f. 34. II 8. «* , DUPLICATA, Ehrb. Mik., 21, f. 35; K. B. 28, f.78; Uab. 8. D., 5, f. 4. i> 9. ti DI8PHENIA, Kg., K. B , p. 93, 28, f. 54 ; Prit., 908. ti 10. (. FUsiDUM, Ehrb. Mik., 7, 1, f. 16, 5, f. 4: K. B., p. 96. II 11. >i LIBER, W. 8. vide above, Fig. 5. II 1. 12. 13. it SiLLiMANORUM, Ehrb. Mik., 2, f. 13 ; Lewis W. M. D., p. 11, 2, f. 8 ; W. and C, 1, p. 6, 2, f. 8. JoHNSONii, O'M. I. D., p. 373, 31, f. 46; V. H. B., f. 28; Sm. 8p. T., No. 286. A very deiicnte diatom. II 14. it Esox, Kg., K. B , p. 94, 28, f. 53; Prit. 896, 12, f. 43; • O'M. I. D., 31, f. 33. An exaggerated form of N. permagmaf 11 15, 16. ii TRUNCATA, Kg. These figures from Rab. 8. D., 6, f. 67. Entirely distinct is Donk's form, which see Plate at end. ■' 17. <• Reinhabdti, Grun., V. H., 7, f. 6, 6; 8m. 8p. T. No. 311. Var. of N. varinns, Oretj. 1* 18. " TTVDOSA, Ehrb., Mik., 39, 3, f 90. Abh. J871, 1, f. 4; * K. B., 28, {. 83; Rab 8. D., 6, f. 82 li 19,20. II PUPULA, Kg., K B., 30 f. 40; Rab. 8. D., 6, f. 82; V .H. 13, f. 15, 16. ii 21. II VELOX. Kg , K. R., 3, f. 66 ; Rab. S. D.. 5, f 12. U 22. GOMPHONBMA, A.MKRICANUM, ( = eapitntum), Ehrb .Mik., 16, 13, | f. 33; 17, l.f. 53; 5. 1. (. 38; 9, 1, f. 3o. i 23. Btkotia, HBPTOPoy, Ehrb. Mik., 16, 2, t. 26; 17, 1, f. 34. ' - I'lui. XXI \ 24, 2ft, Navicvla, Amphionyh, Ehrb. Mik., ;iit, S. I. H(i ; .H7, '.i, l. i. fi, Hill. Jour May 1861, \>. 47 ; K. B., 28, (. 87 ; Rah. 8. D., «, f. 63. Very like N. /u»iff>rmi$, (irun. V. H. 14, f. 33 " LATA. Hreh. V. II., 6, f. 1, 2, iJonk. B. D., 55. 18, 1«7. (iOMPiioMKMA, Amkhu'anI'M, Khrb (b 0. acuminatum), Mik., !<>. 3, f. 33. EuNariA, HBLi-A, Elirb. Mik., 33, 12, f 17; K. B.. 29. f. 50; Kiib. S. D., p. 17, 1, f. 28. " TRKDKNAUir, Ehrb. 83, 10, (., 9. 31,32. Ehthkmia. /,ehha, Kk, forms of; K. B, "i, Pi, ». rt; Kab. S, D., 1. f 8; H. B. I)., 12, 1, f 4; V. H 31, f. '.», II, 14. name an E, Zebrina, Ehrb. Mik. 12, f. 25, 2rt, 26, 27 28. .28. 30. ; ,, "' 5 .jl I ;« ;■ .■« ^: ,, 1 .1 ;•'! '^J: ; ..'! . ■ ..M ''i - 1-, i\< ^: PLATE XKIV. Figures magnified .iOO (Uametors. Fig. 1. It 9.. Figs :3,4. Fij(. 5. Figt*. «,7. Fig. 8. if 9. " 10. " 11. " I'J. " 13. " 14. " 16. " 16. Visyg. 17, 18. Fijr. 19. " -20. Kijrs. 21, 2-2, . Mik., 6, 3. f. 2, Riilfs., I'rit., p. !t08. Hiirdly admits of separation from A'. daclyluM. " Lkwisiana, Urev.. T. M. w**., 18()3, p. 11.% 1, (. 7. Mu- rine, N. America? " Baii.kyana, (trim., Holmi. .\t., (i, f. 26, 27. Murine. " ScHUi.TZii. Kiiin., Bull. Tor. Bot. Club, Maroh, 1889, p. 75, PI. .S9, f. 2. KoKsil .Atlantic City. Nearly al- lied to N. macnlata, H. L. S. " costata, Kif., K. B., p. 93, 3, f. 5«, Prit,, 9()(i. " i>i()Mi'HALA, Khrh., K. B., 28, f 63, Prit., |.. '.mi " EiKGANs, S. B. I)., I, p. 49, 16, f. 137, Sm. Sp. T., No. 27.. Schm. At, 45, f. 29, 30. *' SERIANS, vnr. apipuliiiM, Breb., K. B., 30, f. 23, Lewis, W. M. D., 8, 2, f. o. White Mo'untain. " SERIANS, var. crncifornie, l^ewis, W. M. D., 8, 2, f. 5. ^ Wliite Monutain. " oiRHYNOHUS, Ehrb Mik., 35, A., 14, f. 3, K. B., 28, f. 48, Rab., S. D., C, t. 48. STAURONEI8 APicuLATA, Gfev., fai , p. 30, 4, f. 8, Prit., 913, striae very fine. (^al. Navicula Boeckii, Heib , Cons., p. H5, Sm. Sp. T., No. 252. Fresh-water, N. .J. " STAURONEiFORM, Lewis, W. M. D., 2, f. 9. Lake Michigan. Stalrojjeis INPLATA, Kg., K. B., p. 105, 30, f. 22, Rab., 8. D., p. 48, 9, f. 15, Sni. Sp. T.. No. 492. Fresh-water " Stodderii, Lewis, W. M. D., p. 13, 2, 6, Proc. Al. N. Sc, Sm, Sp. T., No. 502 Markings on this form are stronger. White Mountain. Navicula (altoionkis) Stauntonii, Grun., C. and M., No. 304, from slide, H. L. S. NrrzscHiA virgata. Roper., M. .!., 18.=)8, p. 23, 3, f. 6, Sm. Sp. T., No. 375, J. K. M. S., 1880, P). 13, f. 13. Synedra GouLARDii, Breb., Cleve., 1880, p. 107, 6. f. 119, .Sm. Sp. T., No. 558. Figures taken from slide. GoNOTHECiUM RoGERSll, Ehrb., Bail., Sill. J., Mar., 1844, p. 301, Mic, 18, f. 92, S3,-M. J., 1856, PI. 7, f. 43-46, Mic. Die, 42, f. 39. Marine. Triceratium aculeatum, Ehrb. Mik., 185(.', p. 14. Fig. sug- gested by ihe de^fription. Ff)8sii. " 9PIN0SUM, Ball., .Sill. J., Vol. XLVI, 1844, Sohm. A., 87; r 7. Fossil, Va. IIemiaulus polymorphum, (irun , F. Jos., p. 14, 2, f. 42, 49. Marine. Mastoql'^ia Kinsmanii, Ivfwis, W. M. D., p. 17, 2, f. 16, Whit« Mountain. Fresh-water, I I'li.io XX\', i it, PLATK XXVI. Fijfures iiiiitfiiined r»(Nl (liiiinet«r II Fiv'. 1-4, !il»o 10, 11. (iuMHHoNKMA (4K.M iNATf.M, S. ami F. views, \^., Syst., K. 1'.., p. «(i; IH, r. '.', Kuh., S. D., S, f, 14, S. B. D., -7, f. 2;!'), Sill. Sp. T. No. 1.5(). N'arialilt- in sixt- hikI form. Fiif. "2, v«r. hybrida. " ."). (iOMl'HtlNKMA M.VMMILL.V, P'lirll. Mik., 27, 2, f. 10, Ahll., IM70, |). .-It), V. H., 28, f. 1. FiKH. *J, 7. " cAi'iTATi-.M, vars. '' 8. Vt. " MA.xiMUM, . iuamniill:i, Khrl>., V. H., 2S, I'. 'A. (/onipare fiif. b. " 10, 11. " UKMIXATIM, .Ag., vide fij, A.7, r. H; h. \V. Hail, ) •'• 1 ■ ■ , Mik 344. f. 75, V. H r. ;!0. Ki^. :!. (Ii; (I CIMSTATI'M, Kalfs., All. II.. 1S4:1, |.. 4():!, IS, f. C, Ral. S. I).. 8, r. 19, S. B. D., 1, i*. 79. "iS, f. '2:«), Sm. Sp. T., N(.. 178. iNTRicATiiM, K»r., K. B.;-9, r. 4, Kah. S. D., 8, f 27, S. I? 1)., 29, f. 241. viimi... Kill!). Mik.. ;59. .S, f. 71. Ri»l>. ^ r).,.s, f 9. .'^. H. I)., 28, f. 212. V II.. 24, f. 20. (;ka, p. l."i, 1, f. 42, V. H., 25, f 2. .'v B. D, II, p. 99. CitisTATrM, Vidf lis,', .'i. Mkxicanim, (inin., V. II., 24, f. :', Ci. (". Hiioicosi'HKNiA, (TRVATA, var. Marina Ral>., M. Diet., 48, f. 19, V. II., 26, r. 4. " 19. 2(1. 21 . Tvf. CiiiVATA, Grim., 18(58, p. 8 M. Diet., 48, f. 19; V. II , 2(5, C. 1-:!. " 22, 2;!, 24. -AC UNANTiiEs i.oNciiPKs, Aff. Syst., p. 1. K. B.. 77, 20, f. 1, S. B. D., II, V», f. 300, Prit. 873, 7, f. 42, Sin. Sp. T., No. 4:^, Bail. M. O. 2, f. 1. 22 Kniire plant ; 23 inferior valve ; 24 8n,K>rior valvi'. ExiLRs, K^., .S. B. D., II, 29, 37, f. 303, V. H., 27. f. 1(5-19. Fresli- water. " inferior valve, V. II., 27, f. 18. Mi(^R(«^KPirAi.t'M, (irnn., ^^ (.\<'hnanthi«linni), K. B., 3, ('. 13, 19, Ral). S. D , 8, f. 2, S. B. I)., 1 1, p. 31, (51, f. 380, Sm. Sp. T.. No. 9. The typi- cal form ih hroader, more inllateil. IIii).><()Nis, (Jnin., valves sn|>erior and inferior, V. H., 27, f. 25, 2(5. HREViPRS A.sf., Mik., (5, 2, f 2.>; K. B, 20, f. 9, Sill. J., 1842, p. 325, 3, f. 12, Sm. Sp. T., No, 1, S. R. D.. :57, f. 301. do. inferior valve. siinsK.-*.xir,is, Kfi- Two inferior valves and two plantK in nitii. Fiijs. (5 7. 9 " 11. ■' 1 2. " i:i. Fiss. 14,15 Ffg. Ifi. Fig. 25. " 2(5. " '>7 (1 II 2S. 29. " ;>o. Figs. ;tl-.34. (I II •'Si li II I'lui.^ X.WII. i? I Kilts. 3, 4. :., (). 7, •^. II. ]-2. FiK. l: II. 15,(19) • 17, IS. Fi,i?. -il. " i!2. " 24. " 2.-). " 2(i. « .)- I'LATK XXVI 1 1. Kluiu't's nmifiiUleil .VKJ illumi'terM. i'^CIflZONKMA IIAMOSISSIMA, AfT. SvHt., lijf. 1. A fVolliI, llJltlinil si/.f : S. H. I)., II, p. 79, oil, r. ;!(;9, Sm. Sp. T., No. 47S. '• SmitHII, ;>, the t'riistiilt', I. Iroiid, iiatiiral hI/c, Ai;. Syst., p. IC. K. B, 27, I. :., V. II., 1.'), f. 4. " (iRKVll.i.Kl. "), fniml, mil. si/c :incl rnisliik' ■■;", .Vt,'., I*. H., T), r. 1 ; -JH, f. I, S. M. !)., .Vs, f. ;:ii4, I'lii., p. ',t2H, s, r. ;is. " IMI'IJCATI'.M, 7, Irdiid, iiiit. size; S rnislulf, S. I?. !)., 59, f. ;!(i7, Sn). Sp. T., Nn. 471. " (fii'cKiK:!, fvdiiil, nut. si/.i', and fnistuli- ;•■, S. R. D., ->(), f. :!.".4, {'lit, !)2s, V. M., k;, f. 1. 2. ■' ('(lAiolDKs, ( P'riistiiie ■','", nnd frond, nat. si/.c). Ay , S. 15. I)., I'l. -'.7, r. H5S, V. If., 1(1. f. ;;. " .•VMIOIMcANI'M, (illMl., v. II., I"', r. ;V>, ( S. ti'UUt'. vaiM DiVKUdKNs, S. H. I) , IM. ')7, f. 3<;;'., Sin. Mp. T., No. 4(1.'., V. H.. !"•, f. 10, prolialdy a var. of S. Sinitliii , (loMPiroNKMA, coNsi'HK TIM, v;tr. Miiior., Elirli., K. I!., l;', f. I-:!, Kill.. S. I)., S, f. 12, S. H. I), ir, 98, 29, f. 2:i(l. Caimtatim, Khrl). Mik., 10, :!, I ;}7 . 17, 1, f. 51^ Ral.. S. W. I)., >H, f. 15, S. B. IX, pi. 28, f. 237, Sin! Sp. T., 177 and 6(i5. AidiK, Khil.. Mik.. 17, 1, f. 55; 9, 1, f. 41), K. B., 29, {. 71, Hal.. S. I)., 8, f. 19, V. H.. 23, f. 29, prol.aMy a var. of ( i. .\('iiiiiinatiiin. •' and .'52, f. 234, .1. R. M. H., 1879, p. «)83. Marine. KiiiPiDOPHOKA PAKAnoxA, fninclH and ningle friiHliile. ^u., K. B., p. 12--', 10, r. •■>, H. B. U, 2r), f. 231, M. !>.. 13, f. 19, Sm. Hp T., No. 899. Marine. C'ymbosira AciAKDiiii, K. H., p. 77, 20, I'. 3, Prit. p. 875, 14, f. 14, M. D., p. 14, f. IH. Marine. (iLiMAnwpHAKNlA MUMi.KiKKA, Klirh.. K. Anier., 2-«. I'. I, K. B.. p. 123, 29, r. 80; Prit , 772, 11, f. 4h, 40, M. D., 19, r. 9. A('HNANTH*is AKKNicoLA, Biiil., M. < )., p. 3«, 2, f. 19. Fresli-water. " MiNUTlsHiMA, Ehrl).. K. R., 21. f 2, Rab., 8. D., p. 25, 8, f. 2, V. II., 27, r 35-;W. and 41-44. Fresh- water. Lit'MOPHOKA Ji;b(4KN8II, Ag; Cleve., 1H80, p. 110, 7. ('. 125, V. H., 4(i, f. 10, 11. Marine Ho.MOSOCLAUiA Fii.iFORMis, W. S., S. B I)., p. 80, 55, f. 348, Prit , p. 785, 4, f. 25, Sm. tip. T., No. 197. Fig. 13 frond, under low |)ower, 14, 15, friistiileH sf". BrackUh water. " CAPITATA, H. L. S., A. (l J. M., 1878, p. 12, 3, f. 1, Sm. Sp. T., No. 674. Hig. 16, frond, natural size; 17, frustules; 18, section of frond magnified. Go.MPHuNEMA oLOR, Elirb. .Abii., 1870, p. 56, 3, 2, f. 2. I n.iir NX IX, PLATE XX X. FlKuri's iim«iiltli(l VNi .llitmricf!*. Kin. 1. I'LKlKOSKi.MA ..IIH( I HUM, W. S., S. H. D., I. 1'. "io, '^O, L •^•'•i. i^l'"- S|.. T., N.). 407, Clev*-., IHHd, p. 45). " l'n.l.nlily the siiiiic IIS I'. |i(>iM(iniH, (Jnin., l«tH», p. o(i'_', 4, f. s," H 1-. S. " 2. " Ai-rKNiAiTM, VV. S., S. B. D., 1, p. rtH, '22, ( 2l(i, Sin. Sp. T, No. :, 20, r. 204, Sni. Sp T., No. :^i»l ( )nly a vsir. ol' P. tingnliituin. Fig. 11, found iii North .Vincricn? H. L. S. Kig, 12. '• JHIDTKNME, Suilivant, Sill. .1., ISoJI, (Miirdi), I'ril., p. 917. Frohahly a vur. of P. Spcni-eri or al- tennatiini. '< 13. " Prol>ably sanic iw Vulledonemu enininm, Breb. " 14. " oKTiWATUM, SiillivaiU, Hill. .J., 185W, Prit. 919. Figs. 15, 16. Ma8To<}U)IA exkjua, Lewis, N. R. Sp., p. 7, 2, f. 5, V. H., 4. f. 25, 26, Sni. Sp. T., No H76, Lewis, letters and also annotated copy of his paiier de8cril»e tins diatom a.s only a variety (immature) of Mast, lanueolatu, H. L.S. " 17, 18. " GRKVii.LKi, W. :i , S. B. D., II, ^i^ 62, f. 389, M. J., ISort, l,f. 16, V. H., 4, f. 20. Fig. 19. " i>AN( Eoi.ATA, S. B. I)., II, p. 04. 54, f. 840, Sm. Sp. T., No. 214, V. 11, 4, f. 15 and 17. " 21-23. •' Smithii, Thw., S. B. D., 1 1, 65, 54, f 341, Urun., 1860, p. 57, 5, 5, f. 11, V. IL, 4, f. 13. Figs. 24, 25. Ckratoniks arcus. Kg., K. B., f. 104, 6, f. 10, Ral)., S. D., p. 37, 7, f. 3, 8m. Sp. T., 9, No. 66, V. H., 37, f. 7. i. n.iir x\x. i IM-ATK XXXI. Kiu'iii't's iiiiiv'iiliii'd "((Ml iliitint'fci's. F'm 1. Ami'iih'I-kiha, ()RK(iON'i( a, Gnm., M. M. .1., 1S77, \>. 17i). '■ -J. " I.INMKRIIElMKlfll, (irilll., 1 8(>2, J). 4tlil, 11, I'. 11, Sin, S|i. T.. No. 17. Fins.;;-"). " I'Ki.i.n IDA, Kii., K. I'.., p. lO:-!, 3, f. -52; 30, f. 84, Kill.. S. 1)., .-), f. .5; S. R D.. l-i, r. 1J7 ; Prit., j.. 7.s;!, 4. f, ;".U, Sin. Sp. T., No. 18 '.', front and 2 side views, KiK. "• '■ \VKissn.(i(iii,.);inis(li, M. M. J., 1H77. lito, f. 14. " 7. I'l-KlHOSUiMA VIK(;i\IA(l M, .\..J. M.. l"Vi). 1877, p. IH; Sni. Sp. T , So. 416. " S. ScoMOl'LKURA I.ATfXrUlATA, (JllMl., l.'i7H, p. 17, V. H., 17, f. 12; (Xavii'ula, eonvi'xa \V. .S.) Fi},'s. il, 10. " TIMIDA, lireb., (Navicnla Jeniu'i-ii, W. S.), =-- Nav. AnKlica. Rails., V. H., 17, f. 11, V.i. Via. 11. .X.Mi'HOKA LAxcKiiLAVA, Cleve. 18(57, p 6()7, 23, f. 2, M. J., 1874, p. 2.5, 6, 8, !". ;!, Scinn. .\t., 25, (. 6, H. I.. S., Lens, PI. 3, f. 34. " 12 S( (iLioi'LEl KA ASTILLAUUM, Pel., (allowneis antillanim, ("leve. and rirun. Probalily only a coarser grained var. of ,Sei)l. tumida, fij^s. 9, 10. " i;>,\!7i. ' Jkxnkkii, Griin., 1860, p. 5.')4. Xdvicnla, Jennerri, S. 15. D,, Ki, f, 134. -^ide and front views. '• J4. .\,MiMioitiM> Fi^. 1. Pi,kui{osi(;ma, MArRUM, W. S., S. B. D., 1, p. (i7, .SI f. 276, (N. Amor.? H. L. S., possibly a local var. of \'. Fascicola.) " 2. " Ei.oN(iATUM, W. 8., S. R. D., I, (54, 20, f. 11)9. Sill. Sp. T., No. 400. " .T " pfU'HRt M, ()-MAK.'., I'lit., >^71, 7, I". :^9; Jan. siiid Hill.., p. 7, 4, f. 16; V. II.. -Ji', f. '20, 21. Sii- perior viilvc and inferior valvi', Sni. Sp. T., No. "4. • :',, I. '• TiiWAriFSii, W. S., S. H. I)., :{, f. as, = AilinantirKl- ium, flexelliim, Hreli. Fi^. 3, interior valve; li^r. 4, superior Valve, V. II., ■-'il, f. 29, 30. ' .-., 11, ' inti:rri PTA, Grim., 18(i3, p. 144, i:'., f. 14; V. U.,^iK f. :',, 4. Fi;?. •'>, inferior valve; fif?. M, superior valve. •' (i, 7. ' i.iNK.VTA, Kiirb., lower valves, Mik., 3ii, :!. f . 1 1 ; M>U. lS(i9, !, .\. f. 8; 1, B. f. 2, etc. Sill. .1.. IS.')!, p. 44; V. II., 30, f 31, ;!2. Fig. 8. " Qrevii.lki'.' small form, S. B, I)., 3, f. 35. Figs. It. 10, • cusTATA, (heg., .M. .1., IH.')."), p. :•.», 4, f. 10; IS")?, p. "• ()8, l,f. 27; V. II., 30, I 11-17. Fig. 11. ' i.NTKKHUi'TA, superior valve ; I'lV/'' fig. o. Fig-;. 12. 1.3, 14. s(:rTKi.i.UM, Khrl.., Mik., 7, :? A, f. 67; lo A, f. ofi, li), f. 3H ; K. B., T). r. ti ; Kal.. S. I)., 3, f. 4 ; S. B. D., H, f 34, Sm. .Sp. T., No. 78. Fig. 12, snuerior valve; 13, inferior valve; 14, hoop. " ]'), in ' i)iia-rTA,(ireg., D. C, p. 19, 1, f. 2.'i, .Jan. (Jiian., II, B., f. 14; V. II., 29, f. 13-15, inferior valves. 17, Is. " I'LAcKNTiil.A, Khrl)., 17, siijierior valve; 18, inferior valve, Mik., .->, 1, f 24 ; 7, 1, f 4(i, K. B., 28, f. ll! ; r...l.. S. I)., 27, :•., f. 3; S. B. 0., 1, p. 21, 3, (. 32; Sm. Sp. T., No. 77. •' 10, 20. " Cai.iforn'ka, Grnn., V. H., 30, f. 8, 10. " 21, 27. '' I'KDicii.us, Fhrl). Mik., .3., 12 B, f I ; K. B., 5, f. 9 ; 5. B. I)., 2, f 31 ; Rab. S. I)., 27, .3, f. 1 ; Sir Sp. T., No. 7(5. Fig. 2^ frnslule ■■;" ; 27 under lower jiower, in aifit. " 2?, 23. " scUTKf.i.i'M, Khrli., same as tig. 12-14 in different stages. •• 24, 2.'). Cami'YI.oneis arois, Onni., 18(5?, p. 429, 10, f. 9; V. H., 2S, f. ]r<, k; 24, siijierior valve; 2o, inferior valves, varieties of Coc. (Jrevillei. Fig. 2(5. ('occoNMUS STRIATA, Khrl). Mik., •').*^, f 4; 14, f. 41; I.tA, f. .lo; la B, f. 1(1, <■!(•.; Hill). S. 1)., ;!, f. 12. " 27. " I'KDicui.rrt, v/'/f II-. 21. FigH. 28, 29, 30. Cami'yi.oneis Grkvim.ei, ( irnn., U. M. S., 1S78, p. 245, 14, f. f ; V. II., 28, f 10-12. Fig. 28, a skeleton; 29, in- ferior valve, 30, superior valve Fig. 31. CoccoN'Kis DKC'iiHSATA, Khrh., E. Amer., 2, (5, f. 12; K. B., 28, i, 17; Ral). .S. D., 8, f. (5. * •' :;2. " American A, Khrl)., p. 123; K. B., p. 73; Hal). S. I)., p. 27 ; Prit., I'l. 12, f. 48, -^ V. Mexieana. " 3;',. '• I'EmcuLUrt, Elirl)., same as tigs. ;^1, 27. I'luio XXXIll ftn. 34. It a?. It 3K. KiKs 39, 4(» KlR. 41. CoccciNKiH (tiiLoNoA, K. H.. |i. 7'2. •'>. f. 7, S, Htiiiill form of C. |i|itcei'iiil:) '.' " OcKANi. A, p:i)rli.. Al.h.. 1S4(). p. (i.'. K. .\iiuT., 1,1.1'. 14; •2-t!, f. 11, 12, K. R., 7-2. .■). f. .■>; M, f. 4, I'ril.. Ht)S. 12; f. 42, Sm. S|>. T., .No. 7") -■" ('. diriipiii viir. " I'INNICA, Klirl.. Mik., :;;:, ?,, (. lO; 17, 2, r. 19; :« a; 2(t, f. !l, t'lc. Al.h., 1870, 2, 1, r. 44, K. H., 28, f. 18. Pril., (tXS. 12, f. 41, - V. .'^riiitliii. vnr. NiTiDUi.ANs, Kg., K. II., 4, f. It;, j'rii., .S(i7. " MARdi.NAiA, Khrl)., K. H., •">, I. rt, I'rii.. \,. S(1H ^-= (\ Sciiltlliini y (.;ami'VI,()NKIs iiKijAi.is, == ('. ( M-i'vilU'i, v;ir.. foiii|i. liys. 2S-30, (ticv., M. .1., 18.')!>. |i. l.Mi, r, I'. 1 .I'll!.. |.. 87(1. ('(M'('I>NKIS I'lNNll.AHIA, Hil il. Si ||. .F., 1 H41 , 2. f. IW, K. I!.. 73, |ii'oll«M-H. Fiw-. 1 :<■ KiMT>iKMi\ (irBHA, Ky., K. H., I, f. -i'J ; Hali. S I).. 1, C. :i ; S. H. D. 1">. I, 1. 1.!; IVii. p. T.V.t, 1-2, C. -27; Sm. Sp T.. N<>. 1/iO. " I. "i. " lafAMi.ATA, Kiif., K. I'.., ■), r. •_'(»; S. M. I)., I, l. ;!; ]'r\\., 7 til, !», r. It)'). " (.,7. •' Hyni>mami, VV.S., S. |{. I)., !•.>, 1, r. I ; V. II., :!l,r. S4. " (ilBliA, var. veiitricosimi, (inm. Ti'i«;ii)A, VMis.. Ku., K. B., 8. (. 14 : Riil.. S. l\ 1, f. 11 ; I'rit., 7fil, 4. f. ! ; J», f. loH Ifil and 11, f. IS; Sin. S[). T., No. l.')0. " .\K(US, Ku., K. B., UK, 1'. V), .-)»); Kal..S. D., 1, f. ;W ; S. B. I)., 1'.', f. .^i; Prit., 7oit, 1.''., t 11: Sni. Sj.. T., N... 149. Misci'Ms, Kr., K. B., ;{0, f. «:S. B. F)., 14, 1, f. 10; I'ril., 7ti(), 13, f. IS; Sm. Sp. T., .No. 151. I'ONHTKK TA, .S. B. D., 20, f. 24s : V. H., H2, f. l(i-lS. ocEi.i.ATA, Kk., K. B., 29, f. 57 ; Kab. S. I)., 1, f. 25; .'<. B. L)., p. i:;, i,r. ti. soKKX, K>r., K. B., 5, f. 12; Rait. S. D, 1, f, 7 : S. B. D.. p. K!, 1, f. 9; V. H., ;i2, f. 6-10. " fiiHBERULA, Kj,'., K. B., 29, f. 54; Sm. Sp. T., No. (152. ZKBUA, K. B., 5, f. 11 ; Kab. S. I)., 1, f. 8 ; S. B. D., 1, f. 4 ; V. H., ;il. f. 9-11-14. E. zebra m only a var. of E. arguw. Fig. 34. '• TENTRKUi-A, K. B., 29. f. 53; Rab. S. D., 1. f. 13. (I "<, 9. ti 10 !.".. t( 14-17. If IH, 19. " 20, 21. II 22, 23. 24, 25. 2«-28. 29-33. !! I'iMt- WW PLATK XXXVT. KtKuren luaKnltled -iOU (ItHinetera, FiK- 1-H. Khithkmia AHUiiH, lurge IbriiiH. Coriipiir*' 1*1. M, f. 14-17. KigB. 4, 12. KuNOTiA MONODUN. Khrl). Mik., ay, 3, f. 4() ; Sill. J., May, 184»i, 2, I". 3«; May, Im5|, f. 27. i>ioi>oN, Khrl.. Mik., 17, f. 28al); iti, 2, f. IH. K. B., T), f. 24. Variety of robimtH. " TKU.uoN, Khrl.. Mik., .'{9, 3, f. ft; Id, 2, f. 2(1 Prit. 7«3,4. I'. 4. Var. i)f robuwta. " itDHUWTA, var. tt'trotltm, KalfK,, Prit., p. 7tiH. Striue nion- iiiti>riii. '' HoiiiwrA, var. papilio, I Khrlt.) Rallk., 10. it 11. u 12. l< 13. <■ 14. Figs 15, 1«. l( 17, 18. Ik 19,20. 21,22. I'Uito XX.X\I I 1 i| 1 m ! PLATE XXXVIT. Figures raagnllled jfH) diameters Fig. 1. \i \ ■■■' 4. 0. FiK8 , f. 18. 21. I>I()DE8MIS. Rhai'HONKIs cocconkis, Kliib., .Villi., 1869, p. .ri, 2, 1, f. 7. 8cBi*TR(i>fEis, XirascHioiDFS, (tfun., V. H., 37, f. 4. ' CADUCEUs, Ebrb. Mik., 33, 17, f. 1."); Sill. J., April 184.5, f. 11, Prit., 772, 4, f. 11 ; V. H. 37, f .5. GEMMATA, Grui). .J. Q. C, 1871, p. 170, 14, ('. 4, 5. Rhaphoneis, pretiosa, Khrb., T. M. S., 1854, 6, f. 9; V. H., 36, f. 25. " tJCALARis, Ehrb. Ber., 1844, p. 271 ; V. H., 36, f. 32. " GKMMIFEKA, Ebrb. Ber., 1844, p. 87 ; T. M. S., 1854, 6, f. 7 ; V. H., 36, f. 31. PVobably a var. of amplie- aros. AMPHicERos, Ebrb. Mik., 33, 20, f. 20 ; 33, 14, f. 22 ; Frit., p. 791, l4, f. 21 ; Sm Sp. T., 698 ; V. H., 36, f. 22, 23. " A.ttPHiCERos, var. Californica, < rnin., V. II., 36, f. 24. " " Ebrb., tyjiical form. " "> v:ir. rbdiiil.ica, (Jniii., V. H, 36, f. 20, CocooNEis* MKNTi'i.A, S. R. I)., II. ].. s;;; V. H., M, {. 28. " Bactuiana, Khil.. Mik.. 1, f. 29; 1(1, 11, f. I'.t, LewiH, w. M. I)., !;!,•->, f. IS; V. 11., :!4, r. 32. " I'OLYCii,^ I'liis, ( iiini., vjir. Iii'xuiflypliis, Elirl).; \'. H., 34, . 33. " I'KcriNALis, v;ir, U;ili.. I'unip. V. H., 33, f. lo, Ki. " MA.ioH, var. l.i(I.'ns; \' M., 34, t'. !•'). •' I'ARAi.i.Kl.A, Kliri., Mik,. lo, f. .-)8 : .3, 2, f. 11 ; Hill. J., .Mii.v, I.S42, p. 100, 2, f. 32; V. U., 34, f. 1(1. Not sfparalili' IVniii Iv major, lii;-. 4. l.lNAKis, vai-s. Khrli. ; V . H., 3.'). f. .3, (la, 4. " l.UXAliis, var. f.xcisa ; V. II., .'!•'), I', tic. " KoKMi.A, Kliil.. Mik., 4, 3, f. 19: 3, 4, I'. iS; 4, 1, I'. 13; .Mill . ls(i!), 2, I, f. 12; V H., 34, (. 1. i.Mi'HKs.sA, Khrl.. .Mik , 15, f. titi: 3. 4, I'. 20: •'), 2, f. 8; 2, 2, f. 30. " DECI.IVKS Kliiii., K. .\iiM'r., 2, 1, f. 3; K. M., 29, f. 62; Kal.., 1, 2(1. " INCISA, (freg., M. J., lS.-)4, p. 94, 4. f. 4; Kowis, W. M. I)., p. 13, 2. f. 12: V. »., 34, (. 3.-)a. THiDENTiJLA, Kliili. .Mik., 39, 3, C. :A ; ,SiIl. .1.. IHol, f. 88: K. B., 29, I'. (10, Hal.., S. I)., 1, f. IH: V. H., 34, r, 2, 7, K. Klirt'iil)fi<;ii, RalCs. /YfiOix.N, Khrl.. Mik., 1(1, 13, f. l-".: 17. 1, f. 27, 28; K. r.., 29, f. »!i. '• I'KN TA(ii,Yi>Mis, Khrii. Mik., Ill, 2. 1". 22; 17, 1, f. 32; l.i-wis, W. M. I).. 13, 2, r. 4. M(..-is, Elirl.., Al.h., 1M70. .".4, 3, I'. 7 10; 1871, IC, f. 13; 1370, 2, 1. f. •'..'). •' SKKRII.ATA, Knrl.. .Mik., Ki, I, I'. 3(5; 16,2, f. .32 ; 17, 1, 1'. 40. (Vars. c.f K. rol.nsOi.) •' I'NDKNARIA. Khrl.. Mik., 33, 10, I'. 12, I'rit. 764. Note. — Ki^s. 2o-29, Ralls iinite.s as varieties cil' K. Khrenl.ernii, varying only in having one, two or more iindiiiiitioiis. " 6. " 7. , " 8. '• 10. " 11, Figs. 12, IS. Fig. 14. " lo. Figs. Iri, 18, 19. Fig. 17. Figs. 20, 21. Fig. 22. " 24. Figs. 2.'), 2(1. " 27, 2S. " 29. Figs. 30,31,32 " 33,34. Fig. 3o. i ' HUte XXXVllI. I'M PLATE XXXIX. Ktx*!!'*'" iiiagnifleii .'KK* (lltuiii't<>rs. ; Fig. Figs. Via. 1. 2,H. 4. 5. 8. 9. Figs. Figs. Fig. 10, 11. 12. i:i, 14. lo. 16.' 17. Synedha RowrsTA, Ralfs, Pril., 7M9, 8, f. :?; V. H., 42, f. 67. TRYSTALLINA, Kg. K. B., 16, f. 1 ; S. B. D., 74, 12. f. 101 ; V. n., 42, f. 10. " Kr LOANS, W. S., S. B. D., 74, 12, f. KW; I'rit., 789, IH, f. 20 : M. D., 13, f. 24 ; Sm. S|). T., No. .556. CAPITATA. El.rb. Mik., 39, 3, f. 114; 17, f. 251), 3S; K. B., 14, f. 19 ; Ral). S. D., o, f. 6; S. B. I)., 72, 12, f. 93 ; Sm. Sp. T., No. 547. Striae of endu loo radiate in figure. t'N'niLATA, Greg., S. B IX, II, p. 97 ; V. H., 42, f. 2 ; Sin. Sp. T., f>86. LON<{issiMA, W. S., S. B. D., 72, 12, C. 95; Sin. Sp. T., No. 564, 565. " ULNA, var. longissinia. W. S., S. B. D. " FDLGENS, W. S., (.\rdis8onia f'ulgens. Kg.), S, B. D., 74, 12, f. 103; Frit., 789, 13, f. 20; M. D., 13, f. 24; V. FI., 43, f. 42. Gallionii, Ehrb., K. B., 30, f. 42; 28, f. 36; S. B. D., 30, r 265, Prit., 788, 12, f. 34, 36. " ONYRRHYNCHU8, (wde Small form). Kg., K. B., 14, f. 82; Rab. S. D., 5, f. 23 ; S. B. D., 1 1, f. 91 ; Sm. Sp. T., No. 570. " RUMPEN8, Kg., K. B., 16, f. 6; Rab. S. D., 5, f. 8; V. H., 40, f 14. INVECTANS, W. a., S. B. I )., p. 98 ; Sm. Sp. T., No. 560 ; V. H. 40, f. 33. " VACCHEKiiE, K. B., 14, f 4, Rah. S. D., 5, f. 15 ; S. B. I)., II, f. 99; V. H., 40, f. 19. " RADIANS, magnified only about one half as much as the other figures. Kg., K. B., 14, f. 7 ; Rah. S. I)., 4, f. 40; Sm. Sp. T., No. 574 ; V. H., 30, f. 11. I'lui.. \XX1\. s :l I i 'I il 11 ii PLATK XL. Kicurcs iintK»)tlc(i •">"" illmneterK. FiK. I. • 4. FiitN. H, 7. 8, !•. Fig. lO-lM. •' 14-17. '• IS. Figs. l<», 20. Fig. 21. Figs. 22, 2;^. " 24, 2'). " 26. 27. " 2H,29,»0, Fig. .SI. 32. NiT»»rHiA sPKcTAHiLis, Ralfs,, Prit., j). 7S2. Morv properly .V. nmphionyi^; vnr, speetabiliH, H. L. S. ; striae nxm- ilifonn, V. 11., 67, f. S. " i.oNiJissiMA, iJnin., 18t)2, \t. "iSl ; M. 0, :!, f, 11 : V. H., 70, f. l-:{ = birostratn, W. S. " i.oNOissiMA, tbriiiii |>arvn ; V. H., 70, f. li. " sKiMA, S. H. [)., 13, f. lOS ; Prii., 7.S1, 4, f. 21 ; Sm. Sp. T., No. ;567 ; V. H , tir), f. 7, S. " SKJMA, ronime eloiigatae; V. H., ()(i, I'. 7. '■ SIGMA, vars. rigida, (inin., and rigiduia, (inin. ; V. H., 66, I". ."), 8. " I,A\('K.(.|.ATA, .'^. M. 1).. N, t'. llS; T. M. >.. iStUt. p. is, -1. r. 2U: M. 1)., l.'i. f Id: V. H , OS, f. 1-4: Sm Sp. T., No. ;'>"i'_' ci-osiKiui .M, S. I{. 1»., j.^, t 12(1: V. M., 70 f. .">, 7, s, 9' FAscici i,Ai A, (inm., ISTS, p 21 : \'. M., tit'., f. 11-13, = licimci'iicladia si<;inoidca : S. H. I •.,.")."), 1", 340: ^111. Sp. T Nos. lO'.t, 2on. " ( i,(WTKRli'M, sniidi ronii, ride Wa. Id. i;i. TKNiMs, S. H. I)., l;i, f. ill : V. H , i>7, r. 1(1. SvNEnHA hAcKdi-AiA. Kg., K. H., 3o, f. 31 ; Hall., S. I)., 4, I". 14, 18. (oiiipare nmie vlonnatetl torm, Plate 41, f 9. Ni'rx>ciiiA FUisriM M, H. h. S. p. N... 342: V., H., 68 f. 28,20. (•(iMMiNis, Kail., .\li;., Sacliv., 049 and 843: (inm., I8t>-J, p. •">7.s, 12, r. IM; V. II., 60, r. .32. I'AS.KA, N S., .S. H I)., p. SO, (Mini., 1S62. p. ■")79, 12, f. 3: V. H., tiO, r 2'.', I..r., Sm. Sp. T., No. .361. Synkdra I»am( a, K. 15., 14,1'. 13; Sm. Sp. P., .■»40; V. H., 38, f. 14. " M)N(ii(.;KP8, Elirb. Her., Is4.'>, Prit, 7S8 : Sm. Sp. T., Nil, 564, = capil'tia, witli stilil'orm prfwhicetl afiii'es. i,o.N (liiiiiicfoi'j : PiK. 1. Fi»p. 5. 6. ''ig- 7. t( 8. t( ». ii lo- ll'. Ki^s 13, 14. KiK. 15. U U\. Fi«8 17, 18. n 19, 20. Fig. 21-23. Figs 24, 25. Fig. 26. t( 27-29. U 30. t( 31. u 32. * ■ u 33, 34, Synkdr.v si"ATnri,ii I'.u^, (iniii; .9. ulmt, var; V. II. ;!8, t'. 4. Acrs, Kk., K.H , In, r. 7 ; Riid. S. 1)., .-i, f. 42; V. H., 39. f. 4. Mijjht nil pa*t« for S iiIidi, vnr. " Davica, (iilnii, var.), K.B., 14, f. LS; Kill). S. I)., p. 54; 8in. Sp. T.. 549 ; V. H., 38, f 14. " OHTUSA, S. H. D., 11, f. 92; Sm. Sp. T.. Xo. .Jti9. viTREA, K. H.. 14, f. 17; Rab S. I), 5, f. 24. .S'. m/tmi, var., V. H., 88, f. 12. '' LANC'EOLATA, .S uliw. var., V. II., 38, 10. (lotnpare plate, 3(), f. 21. AFFi.vis, K. H., 1."). f. «, 24, f. 1, o; S. B. D., 12, f. 97 ; V. H., 41, f. 13, 14. Fig. 10, genuirui forma parva; P'ig. 11, var. aeiiminala, (xnin : Fig. 12, var, grneMU, (rriin. " iitcEHS, f. and s. viewx, K. B., 14, f is, 21 ; Rali. S. D., 5, f. 9; Sm. Sp. T., No. 545. Fit;. 13 a., smaller form. " .\Mi>HiRRHYNCHn.s Fhrh., K. B. 14. f. 15; Rab. S. D., 5, f. .57 ; V. H., .38, f. 5. " FUU'HELLA, forma major, K. B. 29, f. 87 ; Rab. S. D., 5, f. 17 ; 8. B. D„ 30, f. 84 ; Prit., p. 786, 4, f. 28 ; Hm. Sp. T., No. -.73. " PULCHELLA, var., genuina, Kg.; V. H., 40, f. 28, 29. '• cROTONENsis, (Edvv.), Grnn ; V. H., 40, f. 10; var. pro- longatn, Griin. U'?s FiK. 10, II. 12-15. Iti. (21). 17. 18. FiK«. 19, 20 Fig. 21. K 22. II 2H. PLATE XLU. f'lKuroM miiitnlfted riii;i lnni;iH,«imii, Clcvc. ninl Griin., lft7H, p. 12, :?. f. Ill: .1. M , 1H7!). |.. -.VA, 2. f. !!»; V. H.. «ir,, f. 4, ■■). jtiirts (irsiiiiic seen under higher power, iiKout "•,"". MA.ioH, (irnn.. V. H., (>\ I, H. (N. .Siirmii viir). partH of sHiiie imdcr liiuher power Hrebiswomi, S H. D., M, {. 23«; V. II., rt4. f. 4, 5. Firs. ■!., 1HS(», p. .Sft.-), I2. f. .!. •• 1-. Kigs Ks 17 Fin. Is. II Ut. ii •J(i. (1 21. Figs a2, 2n r«K. W 2(5. ii 27 -'0 «^ H(i. k( ;tii •{.{ .Mii.'d lo .V. I irillKUITI. I"ln llll.lill \ I A, I!. I).. 1.-., 1. ii;{; V. !i., (1(1, r. i; Sm. Sp. \\, N... ;in.- ••rAriHi.\TA, Hrfl..; S. I!. I)., .".l, t. JCS ; Sm. S|.. T., No. :i7(t: V. II., liJ, I'. 7. H. s.M,AHIs \V. S.; S. I!. !>., II. f. II.-,; I'lil. 7SI. J. I. •_'•.'; V. II.. •!(». I'. II, i; S|i, 'I'., No. :!(l i,iM.\i(iii.\, (Jniii.; M. M. .1., Issd. p. ;\\)\ |;{, (. lO; = Trjihlioiiel'n i>ini<-tahi S. H, I)., lo, I'. 7(> m. «iii\\ii,AiA,(iriiii., M. .M..I., IsMii, p.:{!i.\ 12, f 7. N<.| .V//-.w/iiV( ; H;iyicv's I'YMDItll.v rnMIM!r.»A, Mir. 4(1, 2, (. I;;, 11; Sill. Si., t.. Num. i;i(>, 4;u. <>l> I' ( N;iv:iiin;iti Kimthk.mhiihk^, (irmi.; < icvr., lHs(), p.s-j; \'. II., (1(1, f, (1-8. IIII.OBAI'A, small (iirm, nrlr hit;. •), ti. A. (iriin.; \'. II ,V.», t. 24 ; = .\. Thfriiiiili^,VAV. i.nroHK I tU.lOUIA. (rnin. (It IHHd, p. JSSt; V. M., (12, f. lit. MA.irsciKA, (Jrmi.; Clcvi'., I8H0, p. »7 ; V. H., (12, I'. •'>. (Jldsi'ly allied in jhimini^miK. (.'ampi'acliy lijiy. I'Muii.NKNsKH, (irmi.: 1.S82, p. oSl, 12, I'. :'."»; V. II., 112, I'. ;i. 4. Striae munililurni. siNUAiA. (iruti; Cli've., ISSO, p. S2 : \'. II.. «(», f. 11; = Deiiliniln Hinunta, \V. S. ■rAiiKM.AliiA, (•run., ( 'leve., IHSO, p. S2 ; = Deiilicvhi lahfllarid, :^ .V. .Siiniata, var. A.wri.Ains, S. B. 1)., IS, f. 117; V. M., (12, 1". 11 14. Vifi.ib, vi\r. iicridenfidiR, striae (ilili(pic. (.'amp. Buy. I'AKADoNA, ((iiiiel), (iriin ; \'. 11. fll, 1. (1, 7. := Huril- lariii parado.Ki. KirroNii, H. L. S.; \. q .1 .M.. ls7s. p. 14, .H, (, ^ OKNTici'i.A, (Jrim.; [Kn-), W.S.; \' H , «Uk, I, lO; S. B. I)., M, (. 292. Not r*»*U,\ ,> .V»»;*7i/./ Init Dnilinila l,nm», s. B, I). .•<4, (. 2»». I'Ule XI .ill : '! il 1 •f i 1 ■•.■ 5 i:i il'l: Fi .«>*• 1,-J. .S. 4, i<)i. •'','!. (II). FiK. VigH. !l. « 10. K 11. 1. 1-J, 1.".. '• Fig. 14, 15. It), 17. 15, 19. 'JO, 21, 22 2.".. 24. PLATK XMV. Fiijiii'i's iimt'.iillod 'A*) (liaiiiclci^ Xmscmv PLANA, S. H. 1)., IT), f. 114: Sm. Sj.. T., No. 'M'.l; V. H., 5S, f. 10, 11. " ivvNnimiKoKMis. 'Iny;., D. C, p. ;")7, (i, f. 102: V. II., .")■><, f. 1 :?. 1.1 IIIA..S R. I)., IM. i:!, II, r. 112; V. II.. .")!). f. H 12; Stn. Sp. T., No. :{41. " riitci'M.^i'TA, (tniii., ("U'vi'., 1S80, p. 77; \'. H., f. S. Tn-lilio'iellii oinnm.siita. Halt's. " i.EviDKNsi.s \V. .S.. V. H., 57, f. 1.V17; -V.t, f. 7, = 'rryl)li(ni('llii li'vidt'iisis, ifriiniiliitH. Conijiare (igs. ;>, 4. (•(lAKcT.^TA, (irmi., \'. H., o!l, f. 4, Piinctic .should lit> •■()ii,-s<>r, '-' Tryblionella, viir. coarctiilii. PflilA, (Miiiipiirc tif;s. .'), (). Ui-NoAiu.A, Grmi., I.sti2, p. 6t)S, 12, f. :'.l ; V. H., ."),s, f. \9-'l'I; Sm. S|). T., No. 347. VI VAX, < B. D., .SI, r. 267 ; V. H., 62, f. 1. 2 ; -- Nil. !tiii|)luonys, viir. MAiuNA, (rrun., V. H., 57, I'. 26, 27. Avsi-STATA, (in'g., Clove., 1880, p. 70; V. H., 57, f. 22-24; =- Ti yhliotu'lla antfustata ; S. I',. I»., 30, f. 2(12. I'L'NCTATA, S. B. D., 10, f. 76; 30, f. 261 ; B. .1. N. H., p. 344, 2, f. 76 = Tryhlioiu'lla punctata. TKVBMoNEi.iiA, Ilaiit/,, V. II., 57, 1.9,10; probahly the same as Tryhlioiu'Ua gracilis; W. S. Set TKi.i.rM, .S. M. I)., 10, f. 74; M. I)., 13, f. .30; (markings rather too ilistinct) = Trihlionella sciitelhini ; W. S., the same as T. circiuiisuta ; \'. H., and called liy Bailey .Siirirella circinnsiila. Plate :a,iv I f ' hi M \l if ! ■ pi :.a f \i i f ) Imks. 1, 3. 4,- s. < ). .. l»t, 11 i Fig- rj-14 K 1.-). Figs. It), 17. •• IS, lit 1-ig. 20. Fins 21, 22 (1 23, 24 TLATK XI.V. Klsrmvs iiiatiiiiili'tl .Vki tUaiiiclcrs. I'l.AOKMiR.v.MMA IT i.cH Ki.M M. (iiev.; M. J., 1 8")9, |». 2(l!l, 1(», f. 4-fi; Piit., 774, 4, f. .■>2. Costae are Ipciulod. Ctll. (illillU). " PiUHKM.UM, a \»Mv iartre s|ifiiiiR'ii. DiMKIiKiiHAMMA MAKINI M. Kalt's. ; Pllt., ]). 7!)0 ; V. H., 'M), (. H. I'l,A(iI(MiKAMMA l'Y(iMAKl'M, (ilCV. ; M. .1., IS.'i'.l. Ji. 210. KK 1. 11. Caiiip. 15ay. VAi.iDi M, liii-v. ; M. .1., l.S,-)!t, p. 2Uy, 10, f. S. Cai. and ('ain|i. Hay. (jiiKooKKAM'M, (iiev.: M. .1., 1859, p. VOS, 10, f. 1,2: Jan. aiid Halt., p. 10,2.1'. 8. "ostat- are lieaded. Moliile. oBKsiM, (iiev.; .M. .1., l.S.")9, p. 211, In, i. 12, l.S. Charlestdn. " r^lMNosiM. Cieve. ; .\. ].. K. I)., p. Is, 4, f. .')•"). Camp. Hiiv. ('AI.IFOKN'UI'.M, (4iev. ; M. .1., IS,")!), p. -Jll. 11), f. l-')-17. (.'^triae iiionili.driii. ) TKs.-iEi,LATrM, (irev. ; M. .1 , l.s.'i'.i, p. 20S l(t, f. 7. oKXATi'M, (irev.: M. J., 1H.">9, p. 209, 10,1'. !» ; V. H., 3ti, f. 3. ("ostae iiionilitonn as in all of this jrenuv, H. I.. S. tii.Yi'HODKsMls DisTAN.s V. H. ; ;i(), I'. 15, It); I )iinere>;raniina, t iiey. Wii.LiAMsoNii, W. H. ; V. H., 3t), 1". 14. \- I 1^1 Hi O XI iV. n J O ^ o 5ooo o !< o o o li t4 1 I I i t » .1 1 II 1j 1M-.\TK XLVI. l''li;ill'i'> iiiii«iillifil .IdO (liunii'li'iv Kiu. 1. > ;i i I'igs, 4. 5,6. Fi>;. 7. " i). " 10. " 11. Kius. 12-11. Kii:. 15, Ki^s. I<5,(21, ^•^) '• 17, IS. " 19. •'•) • 23-25. 26, 27. Asi'i:HM)NKi,i, \ Fdit.MOsA, \ar. siilitilissma, N. America '.' " •■ var. siil)tiiis, (inin. Lake Krif. " NOTATA, (var. of Ulcakleyi) (inin.; \'. II., ■">2, I". li. FOR.MosA, var. irraiillima. Manl/. : V. 11., •M, f. 22. *' " var. Kalt'sii ; W. S,, a larjjeaiiii a mini- Htiirelorm; S. I?. I)., \,. si : T. M. S., KSHO, p. 150, 7, f. it. " HlkakeI.EYI, VV. S.. a var. ol' A. lonniixn ; S. H. D., p. S2: T. M. .s., iS6(> p. 15(1, 7, f. 10: Lewis, .N. ami K. Sp. p. 10, 2, I'. H. i'oRMu.-»A, var. uracilliina; \'. H,, 51, t. 22: S. B. I)., II, p. SI ; T. M. S., 1860, p. 14!», 7, f. S : Prit., 77'.t, 4, f. 17 : M. D., 4;i, f. 14 ; Sni. S]). T., No. 4(). Dknthui-a TiiKU.MAMs, K. B., p. 43, 17, f 6 : Halt. S. D., 1, I'. H; V. H., 49, f. 17, IS; Sm. Hp. T., N-.. 12S. " LAiTA. Bail. N. Sp., 9, I'. 1, 2; V. II., 49, f. 1, 2. DiATo.MA ANCKPS, fniiit view ; fiirs. 17, IS, end view: Elirli. \'. II., 51, f. 5-8. " VTLdARK, front view: Bory. ; K. B., 17, I'. 15: Kali. S, D, 2, r. 6; S. B. I)., 39 and 40, f. 309: Sni. .Sp. T., No. 127. •' K.voNOATUM, end view; .\g.. K. B., 17, ('. 18- Kali. S. !>., .-^'i, 2, f. 1 ; W. B. I>., 40 and 41, f. 31 1 . '■ Ehkkniikrgii, eiiil view ; K. B., 17, f, 17; Sni. Sp. T., N... 13:;. " ANCKi's, end view ; \'. H., 51, f. 5 S. " I'Ki TiNAi.K. end and front view: K . H, 17, f. 11; Kab. S. I), 2, \: 2; V. II., 50, f. 23 2t;, ■' KuKKNMiKiioii, front view, compile lij{, 16. IKNIK, front view: \>.^ Sysi. ; K. B , 17, f. 9, 10; Sill. J., 1S.36, 2. ;• 12. ■' loi.iiNUAif.M, front vii'w, coiiiparf liu'. 15. . I'late XIA'l. : f ] it tf \ \ i: '■ ^ ! ! P K^ I' 1 I'l-ATK XLVII. I'iyuii ■^i inai;iilliiMl iinI illiiincli'is, Kiu. 1 i u 10. 11 II. .' i'J. VifiX. i:i, 14. h\. I-".. Fios. Ki. 17. .. IS. 19. ■IK- •JO, 21. FHAiiii,.vniA ( vi'i'i iNA, Ih'smii/, ; K. H., Mi, 1. S: K;ili., S. 1 •.. I. I'. •J; S. r,. 1)., ;M, f. J'tti: l>rit., 77(>. it. (. 17:5; Sin. S|.. T, Nil. I(i."i. viuKsKNs, Riilfs.: .\. M. I)., 1S4;;, |.. IK), 2, i. ti : K. B., 1(). ('. 4 ; Hah., S. D. 1, f. 1 ; S. H. I).. ».\ f. 2«7. i;iNoi>Ks, Khrl. : .Vhli.. 1841, p. 4I."); Mik., 1«, V. f. .S« : Mik., (■>, I, r. 4; this :iii(> : var. 4"i, I'. '-'9 ; 4t;, f. 14. ruRuKNs, Khi-tp. Mik.. 7. I, f. s : 1, ;;, (. s ; Aliii., isiiO, la, f. 4. " Hakrisonii, (iiim. : V. II.. 4o, i. 'js. coNSTRUKXs, (irun. ; V. 11., 4o, 1. •J7. IJRKVISTRIATA, rniii ; \'. 11., 45, f. 31-84. " PAHADOXA, Klnli. Mik., 38, 1"). f. 18; M"., 14, f. 10. Somewhat (loiilitl'iil spocii's. .Mi'TAmi.i>, (iniii. : V. H., 45, t". 1"J ; Hran Alp., p. 1 19, 4. f. 8. FnistiiU's colu're strongly hhiI I'oriii liamU. " coNsTKrANs, (Jnin. ; Saini' as ti^fs. 18. 14. Ki^s. 28--i6. Ki^;. -Ki. AMPHK KIMIAI.A, Elllli. Mik 14, t. 1-8: Mik. I'. '). 6. (Al/iPOKNicA, ( siri- atiila Marine. Pacikica, (4nni. ; 186-J, p. 878, S. f. 19: V. 11., 8;>, f. 20-28. N. .\nu'r. '.' No Krajjilaria, cuncale antl allied to 'IVaehyspliaenia, It. L. S. KNTOMKN, Elirl.. Mik., 5, .8, f. ."lO; K. I'.., p. i(i. •J7--J9. l.irMoi'noKA ki.aheli.ata, S B. D., •_'(•> ami :!2, I". 284: .J. R. M. S.. ' i«s- 10, 81. 32, ;52a. 1S79, p. Hsa. (iifAi iLis, (Jnin.; Medw., \'l. p. 84 : \'. II., 4t'>, I". 1.' (Al-IKORNK'A, (JrUU. V. H., 47, r. 1 I. Si riae uIiiuiik Fit;. 3.')-87. .Ii'R«KNsii, .\^r,- rii've., 1880, p. 1 1(1, 7, r. 12o : V. II., 4(), f. 10, 11. Fnistules not Lent. TiNCTA, (irun. ; H, X',. ODONTinitM MKsonoN, K. B., 17, f . 1 : S, I?. D., 34. f. 2SS ; Sin. S|). T., No. S82. " iiYKMALK, K. B., 17, f. -1; S. B. 1).. :i», r. 2S1I; Sm. Sp. T., No. SHI. " Mi'TABiLK, S. B. D.. 34, r. 290: Sm. Sp. I'., \os. 38;i, H92. TiMsKr-A [SlrlalHln) iNTERltrPTA, Klirl).; K. B.. 18, f. 4. M. ().. 14, f. So; Sin. Sp. T., No. 591. < )iM>.\i iDiiM tahki.lakia, S. B. I).. :?4, f. 291 ; Lewis, VV., M. I)., p. IS, 2, f, 1, 2. These figures represent al)- normal or sporangial forms collected liy Dr. Lewis in White Moiintiiin pools. .\Mi'im>K<)RA oRNATA, Bail. M. ()., p. .'W, 2, f. l-"), 2;>: V. IL, 22 bis f. 5. Compare plate, Kij{s. Bail.'s figure but too sniall. " cAi.i'.Mi'rrir.'A, List of diatoms of I^akc Michifiaii, W. VV. Thomas, Ciiicajjo. DicrvofHYA forms frequently fonn--■ F ^T^nrB:":'- riT Li. L ifffiifiiA ififinio oran] 1 i I . i I 1 'I I M* i I'i ' i .1 FiK. n r,. S 10. ii-i:',. (( 14-16 tl 17, IH Fig. 19. Fiifs. •H) •2.',. FiK. '24 -'2.'). 2(J. I'M'^iii'i's iiiiiuiiltli'(l 'iiKi iliiiiiicii'iw. Orammatoi'hoka HKRi'KNiiNA, Klirtt. Mik., 8.) A, 22, I'. 14 K. B., •29. (.X-1: S. r,. !)., 42. f..S15; V. H..o:<. f. I .!. " iNDUi^ATA, Khrl.. Mik.. IS, f. s? ; l», f, :!7 ; K. B., 21». f. t;8. " (iiBJSA, Flirlt. : Atiier , 2, ti, C -^ ; K. H., 2!t, f. 77 ; Frit., p. SOS, 11, f. 4s. Fisf. <> riitluT ion iiiiicli inlliiled ;it ct'iiter. Fis;. 7 iimv lu' ii viir. of iiiiiritiH. " MARINA, K. B., 17, f. 24; S. B. D., 42, f. :;i4 : Frit., 808, 4, t. 47 : Sin. S|.. T.. N... 18S. " a\(+i;loha, Khrl).; Ainer., 1, 3, f. 12; Mil;., 21. f. 18; 18, f. 88; K. B., 29. f, 79; :?0. f. 79: = Imtnalifera, Kj;. " marina, M. IX, 12, P. H."); coinpare tigs. 8-10. " stricta, Khrl).; Anier., 1. 1, f. 22; S, 7, f .SI ; K. B., 29, f. 7(j. " (:arib.ka, Cleve., 1S78, p. 14, 4, f. 27; V. H., .■)S^ f. 19. V skrpentina, same iiN ti^. 1. Shim Her form ; dolN on tliis species mure ret;iil:irly (|iiii)('iinii tliiin illustrated. " .Mkxkana, Khrl..; K. B., is, f. 1 ; 29, f. i;7, (iS; V. H., 5.32, f. 11, -^ marina, vide. fi>r M-Ki. " maxima, Urun., 1S62, 41(i, 8, f. "i : V. H., o.T-r f. 12. if i ii I'l.itoXMX, f I" : i> > IM-ATK L. hiuMiii'-. iii'miilllc'il •ii"! cliiimcli'i'- KiK». 1 ;•!. Tauki.i.akia i i:nk«tkata, K. \',.. 17, f. -J'J ; IS. f. i'; ;!0, I'. :;!; S. M. F)., 4:5, f. ;{17; I'rit., «rAl!(.INAIl-'«. \V. S. ; S. H. !».. II, |i. :W : I'rii.. soil. •' 13. II. 17, IH. •' i,A(isTi{is. Riiils.: ..\, N H., 1848, p. Kto, 2. r. -J; K. n. 2'.». I. 70; S. B. D,, :i9, f. ;'.()H : Hrit.. |i. «()ti. 1 1. I. 24, 2">. .\li side views. " 19,20. " i.Ai I siKi.s. arKiilier I'tniii : tliivt- Iroiit views ,'tiiii one side view. ;!0. f. 4;!, r. I'. T., ;w :'.()H : .'ieWH. vifw^ 11 I! I! I i I i !■: 1 1 i ^ ■IKS, PLATK 1-1. I'iL;iin-i iiiiniiiitic'd Vm (lianictoi'-. \-2.\A. SriMAiKM.A i-\iiT\tiATA, Asi.: K. !'.., IS, t'. ."); S. R. I)., ;il\ l'. ;W7 ; I'lit , ■\. r. 10: Sin. Sj,. T., .No. oK). •' •_>.;:, t. Kh \iii>()Ni;ma AwniATK r.M, K li.. IS, f. 7 ; Frit.. S(i."., IH, f. 27 : S. P.. !>., S'^. r. .S'l,-). ,Smi. S|i. T.. Nil. «•_>. » .'), rt, 7. " Anci iiiM. K. H.. IS, t' «; S. H. D., HS, f. ;!()•'.: riii., s(it, 1(1. r. '2(t:{, I'lM : V. n , -H r. 14-16. l""i^^ 7 (lolled iill uvcr; lit;, ti perfei'!'.!- stiiooth. Fip. 8-1 1 . •' MiNi-n M. K. IV. ■.'1, f. L> : S. H. D , .-.S, f. 8(i(', ; I'rit.. 1, r. II : S!n... 101. lv)-17. 1 1 ANT/sciii A AM riiiiiN vs, r, . .Vi7-.s('AiV( niATi('A. K. r.., |p. ii-_'; I'rit.. 77*2, 4, f. 10: Sni. Sp. T.. No. 4I.S: V. H.. .V), f. 8. i!o. NiTzs( iiiA AMPiuuxYs, s. R. I)., i;i, r. i(»o: Sill. Sp. 1'., No. ;;:i,4 : Prit., p. 780. .Same us fi«s. l.'»-17. Pitts. Kir. I'UteLI I n Figs. 1, 2. Fig. a. Firs. 4, 5. '• 6, 7. FiK. 8. '• 1). *• HI. 11. PLATE T,1I. Fllfnrt's iiiiitciiiriiHl "itKi cltitnn'tcr^. SiRiRKMA Bis«RiATA. W. S.; S. H. I).. 8. f. •". Breh. has a S. hi- neriutu which is Siir. litieuiiii. W. S. •' ki:ch:i)KN.«. A. S.: Si-lim. At., IV), f. -.'4 ; 24, )'. '28. Var. Ill" 1^. fuxluom. FiRfi. 1-2, 1.". •• 14, 15. " Iti. IV. Ill" 1^. fuxluom. (iRWKiiu A, KiiU'iist.; Scliin. At., 21, f. 17. Only a Siir. tifyaiix, Kiirli. ( KiciATA, A. S.; Sclim. .\l.. •'•I), f. 15, 16. i;K.rKi>KN>. .\. S. Prnhiilily ji viirietv of fastnosa. ('iiui(iiiri' Fi|k{. '^. il.iMlXKNsix, (4niii., IStiJ, JI. 4ti;i : Sihin. .V;., o. (. ti ; 4, t'. W. Pnilinltly ;i viirifty nf S. j'axtKdHa. lAsTiosA KhiK.; K. IV, 2V. f, 19: S. H. I)., 9, f. (>« ; .M. .)., IHo."., (). 4U, 4, f. 12; Schiii. Al., ."), f. 7, 8, 1 1. Tliis Htjure is one n\' A. S. not W. S. .\ viiriahle t'nrm (lifli'tinK K''''"''.^ in si/,i-. Marine. Compare |iliiti' •^."t, tijiiiies 1 4. .,i;mma, Khrl>. Ahh., 1840. p. 7(1, 14, I", n ; S. B. D., 9, 1. (m; I'rit., 79"., 12, f 2 I: Schni. Al., 24, f. 2«. 27., eti'. ni'i..N-(iA. Kh ■\>. .Mik.. 17. 2, f., 1 ; 2, :;, f. 15, etc.; K H., 29. t. :!S; .-ichin. At., 22,f. t) -8 • near Kk.': s/ilendiilti ; S H. .\.. S, f. (I.S. MolJ.KlilAN », tiriin.; .S4im. .\t , 28, !'. lUi, 'M ; 56, I 21 •2;'>. IVnsaoola. •' -.... ., . 21 •2;'>. IVnsaoola. AN«.i:sTA. K. B., 8(1, f. 52; Hah. S. I).. 8, I \L, 28, f. 89-41 ; Sm. Sp. T., No. 512. 8, r. 17 ; Sohni. I ; '! t\ V'i i I I 4 rL,ATK LIII. F'luui'i's iiiiiKultU'd VKi iliniiu'l)-)S. 1 Fig. 1-3. SiHiit Fii 4. 0,6. 7,8. 9, 10. 11. Fig. Figs. 12, 13. FiK. 14. Figs. 15, 1« Fiji-. 17. Fijfp 1«, 1« li 20, 21 Fig. 22, 23. 24, 2f). 26. 27. i;i,;.A Mkxkanv, .\. S.: S.liin. At.. ;, f. 10-12. Tne.'ip and llif folliiwiii)/, Iji;. 4, cviiii-nlly only varieties of <9. /(DftiioKa, I'llii'li, ( 'i)iiiii:irt' |il. 52. (Jnlf i>f Mexico, ItKi.iMKcKii, .Noriiiitn ; Sciiii). At., 4, t. 22. Camp. Hay. cin-MKN.v. Bivl)., S(4im. Al., 24, f. 7-9; V. H.. 7:H, f. 1 ; Sill. S|). '1'., Ni) ■'ils. Hreli. MijiKestetl they are variclies dl' .S. Hriijktvellii, II. L. S., timsiilefm tliem nearer In .V. iwalin. nVM.i.s. K. B., •■<(.). f. H4; Kal.. S. l>., .S, t'. ;>4 ; S. B. D., !), f. (IS; S.liMi. At.. 2-1, f. I l>. Salt Lake. .vncii.MA, S. i; L>., II., p. S8. Scliiii. At.,2H. f. 34,;$5. MicKocoRA, Klirli.. K. I'.., 211, f. lo: Kii'.. S. L.. 3,f. 26; Sill. Sp. T., No. .")2t;. .■*PiKAM> K. B., 3, f. ti4; Kali. S. U., 3, I". ;"> ; Sehiii. Si-liiii. At., of), 1'. 2'"i, 2ii ; lief'T, Campyludincug itpi- /■((/iV. iM)i< TA, A. S.; Scliiii. At.. 20, f. 10; 24, f. 15, 25. I'riili:il»ly llie .same as. (iy. H, S. (nKilis; var. nvArv l'"''i''-. K. B., 7, f. I 4 ; S. B. I).. 9, f. 70; Sdim. At., JS. f. 4!) ").'.: \'. M.. ?;;. !'. 5-7. I'rt.lmbiy a var. c(t' .v. Di'iUiit ; H. I,. S. iiii.icAi'issiM A, Lewis, X. a:.i'i I. Forms, |,. .vVA, 1, f. 4. MiMTA, Bifl,.: Kali. S. !>., .X, f. 28; S. B. I).. 9, f. 73 ; Schm. \{., 23, f. 42 4S; Sm. Sp. T., Nos. 027. -ViK. iM'Ji.YiTA. Klirl). Amer., :t •"), . 2, 4; K. B., 28, f. 27; B.ih. S. I), .'{, f. 23. I)oiil)tfiil '"orins, pnibahly small varieties ol' Svr. splt-ndido or may t)e <, I, f. 1. ANcKPs, Lewis, N. aiifl L Forms, p. 342, 1, f. 3. INTKHMKDIA. Lewis, N. and L Forms, p. :!39, 1, f. 2. AH< Ti.'^si.MA, A. S.; Schm. \L, •%, f. 13, 14. PInif I r r i J : I ! i I ^1 I'T.ATE IJV. KiRurcs iiiii;;i)lflti(l ."): ^. S , = (biseriuta, W. S., not Hreh.'s form) ; Mik., 7. .S .\, f. 17, 20; 7, 1. f. 2 ; 14, f. HO; K. B, 7, r. 1(1; I ab. S. D.. 3, f. 21. FigH. 3, (7). " apLENUiDA, Ehrb. Mik., •'>, 1, f *2; 14, f. .'<5; S. B. D., 8, f. 62 ; V. H. 72, f. 4 Pij?. 4. " sENTis, A. S. ; Sehm. At., 19. )'. 9, 11. Has appeaninee of a very larne form of .Sur. fustuosa. Camp. Bay. " 0. ' " VALIDA, A. S.; r-ichni. At., 2;'., f. 3. Looks lihe an ex- iiKgeriiited form of S. Npleniiiiia. " 6. " (ii'ATiMAi.KNsis, Klirb., == i S. cardinalis, Kittoi' ; = S. limosa, Bail); Mik., 'AA, 14, f. 24; Sm. Sp. T., No. •">2:t; .«<. laniinalis. Silim. At, 21, f. 11-14; S. limosa, Mik.. 18Wi, 179, 9, f. o. " 7. " spi,KNi)il)A, vide ti^. ;>. " 8. '• KOBir.H'jA, Ehrb. Mik., jti, ;i, f. 31 : 17, 2, f. 1 ; 17, 1, f. 14 ; .Sclim. .Vt , 22, f. 3, 4. Marine. I'robably a variety of splendida ; Sur. nobilisof (iriiii. is a s(K)ran^iHl form of splendida. n '■^''^^•■' I'lal,. 1,1\ h ! I I i t Ji. J t „ 'I M if ,i PLATF I-V. Fieurfs ma(;nlflp(l 'i'lfi (lliiinrtcrs. Fijr. FlRfi. < . 8. 9. 10, 11. 12. Srid'HKi.i.A Kkmk.kkii, Lewis N. ;ii>(I \i. Sp. |.. T.. I, I'. '1 : S,hn\. Al.. •_'(!. f. !i: -21. C. 1 : .Sm. .S|,. T.. Nd. ')20. iNDlc TA. or Siir. siriiiiiilii, v;ir. indiU'tJi ; A. S.: .Sclun. At., 'J(l. I m : -24. f. 1."), 2."). Kl.i:.i.\\s. Khrl'.; K. I'... '.'h. 1.2:1: l»;tli. S. 1)., .!. f. 2; Sclmi. At , -Jl. f. IH. S.woNlrA. AiUTs.; >vh\\\ A I .. 'Jl!, f. I . l'r(fl>al)lv iiiily H vurietv of S. siilfinliila. " KASTi'os.v, Klirl) : Sclnii. At.. "), f. 7. 11; rompaiv I'l. 4!l, f. 10; ."i'J, I. I :H. '• -TRiATt'LA, Tiirp.: K.H.,7, 1. t« ; Kali. S. D.. .s. f. -.'-J; S. B. I). 9, f. <;i : ,S,.|,iii. At,. Jl, r. 17 22 : Sni. Sp. T., No .').•{«, = Snr lesiiicio. Klirli. Salt Lake. " HKOINA, .Jaiiisch ; Stinn. At., 21, I'. ."). »5. ( al. -Pi.K.NDinA, v.tr. Ort-jjonica. M. I,. S.,=r Snr. Ore^dnica, Khrli. Mik , 'M. 12, I'. 27 : Sciini. At., 22, f. '.» '' >PLKNnu>A, var. Inririda, H. I,. S., = .Snr. tiiraidn \ S. B. D.. 9, f. rtO ; Sclirn. At., 22, I. IK. Lake Erie. Kt.KOAVS, var. David.sonii. U. L. S., = Sur. David.xonii, A. S; Sclitn. At , 21, t'. 7 Id. i.AKViGATA. Khrl). Ber., ls4.'j, p. SI ; Sflim At., 2-1, f. 2ii, 24. l'rol>aldy a variety of Snr. regiiia. Jl ■ u I'luic ia; , \ : H^ ' El. 1 1 ' I r KiR. I. Fijp.. .S, 4. Fill. 5. HS. 10. n. 1-2. PI,ATK lA'l. FlKiii'i'K iiiui,(uitleU VK) iltiiirx'terti St iuKKi,L\ KEii.KXA, Kliib. Mik , :;;!. II, f. I.S, AI.Ji , IM70, 3, '2, f. "i. Prolialilv ;i VMi'icty III' Siir, s|ileiiiiiilii. ( >roy;nii. " l.Kl-rtii'TKKA. Khrli. Alili., I«7(t, ;'., 2, ('. 7. On-ijun. (iKHoi.iii. Kliilp. Al.li., Is(i!t, |,. .■,;(: Al.li., Is7(i, 2, I, f. 7 : Sill. Sii. T.. Nc, ')I7. Iiaii. rliKM l,,\ lA, Klirli. Mik. 14, r. ■S.i; .Vl.li., |S7(I, •' I, f. !t; Sill S|). 'I'., Nil. •'.17. I'l.'ili C'AMPYMlDlst L'.>< KlIKKXHMtKll, K.llfs. ; I'lil., ,S(I2 12, I'. 12. I .'<, '. 23, =r^ Siiiiiell.'i cMiiipvlniiisi'iis ; Khrli. .\iiu'i , 3, f. «; K. K., 2S, C. 2tl; !t,il.. S. I)., 8. f. I. Ambkm'AMis, Hlirlt. Alili., ls7i», ii. .'»•_», ;; r. Si'KiRKM.A MiNiTTA, Bieli. ; Hill). S. 1», ;{, r. 2S ; S. |i. I). 9, f. 73; Schin. At., 23, 42 4H ; V. U., 73, T. 9, In, 14. ( AMi'Yi.onisciTs Ca.«tillii, Khrli. .Mili., 1H<19. 1, f. I-., '.i; \\>\\., 1870. Mexico. " i.A'rrs, Shidl.. ; T. M. S., lS.-)4, \k Ki, I, 1. 13. SUKrRKM.A PAJiKlTRIFORMIS, S. B. F)., 30, !'. 2oS ; V . H.. 73, f. II ; Sm. Sp. T., No 033. ('■AMI'YI,OI)|>( tS Hl'MHOLDTII, Khlll .\lill., \Si\9, )). 4(i, IP], I. ;!. Oregon. I'Ihi. iai ^^1 I I ' ^1 :li i 'if* h ii 1 i 1 1 t) ^-^n i 'i Viu*. l-o. Kik;. Kins. 7 9. V'^K- 10. KlRH, UN. KiK. 1".. Kijfs. Hi 20. (. .) 1 . -i'l. i' 2«--J">. -'H •• •Jti. --'7. •.'!! " :?(i :<•_'. lit; Fiua. .S4, .'Jo. 1'I,.\TI'. I-VH. I'Ijiu'c- iiiiiiiillli'il '.mi illiiimti'f NlKi.uMr! K M MMri.(.ii.h>, \u-: K- IV, H. C ■'> ; S. H. I>, Ift. f. :VJ1» ; |iiil.. |.. sUl. .'), I", f.l: II, I'. 14; .\ltii.. IS70. 2. \ C>~ . M. iii>iMilii()inii% Ku. 'I'liis niiiiii' wit.* Kivi-ii liy Kt'ii'/.ini;, Ixit iitJit-rN ii|)|ilieil it iiidiixriininiitfly to liiinH'i'i, iimiitiinlnitlfs, ^iiliim. (li-ci^'cni. I'ic. It i^ (if nil vnliie. " 1 iiciriixi:Nsi>, Mail , = iit'imliitii, Kn. I\. 1'.. 2, I'. M; V. II., s.s, I' :\ :,. " (iHANii,.\i.\, I,. \V. i'.Mil : H. .1. N. II., p. ;!.!2, 1, T. 7. V. \l,x7. f. 10 12,= .Mil. imiulatit. = (iiiHio mlla «riiniiiiilii : ti. niaichicii : |inict ra : Icikt- lima. " .\mkuic \N\, i\al>. ( >r viT.v iluiilitt'iil valiif. No line alilt' tn ifil wliat iliis is. v\Hi\Ns. .Vu'.; A. .N. II., isia, p. ;i.")7, it, I'..'); K. H. 2. I'. Kt; S. M. I)., .")!, t. :;:12; V. H., S.'), T. lo- IT). " VAiM.vNs, liir. tViini Kali..*'. !>. < KKVt'i Ai A, Hail : 1>^. var. iafvi>i ; 19, 2o, var. tenuis ('nMi|iare lit;. 0. " i.iiANil.A TA, Hail. \'ifi' tic. 7 '.'. s< A I. A HIS. (iinn.; \'. H. srt, f. ;>o. -iMiiAi.is, Kk.: V. H., ,S7, r. li» 22; Sni. Sp. T., No. 2:!1, = vars. ol' niaimlata. IHSTA.NS, Kk.; K. H., 2, r. 12; S. H. |).. 81, f.:{,so ; Kal.. S. I)., 2, \: 9; V. H., rtt). f. 21 -23. " oKA.NL'i-A I A. var. = M. carcdniMiHiH, (irun.: V. H., >h7, r. 27. scfM-TA, K«.; V. II., 91, r. l;'., 11, = Ortliusiitt marina. Side ami front views. I'lair lA il. H. " v53 II ^^^ 3' immu mrr aa^w/ Bia as ! ■ If i; i '• PLATb; LVIIT. "isfiiri'S m;iLiiiflcil '**^ diaiiu-ti-is. Fins. 1. •-'. Mki-osira SOI, Kk.: V. H, '.M, f. 7-il; Witt.. 1S88. p. 17, 4, f. H. Svii. (iHllioiiell!! Hud Ortlidsira sol. " s< ri,!'TA, Kliili. Alili., 1x70, 2, I, f. 71 ; vide PI. of,, f. 34, 3'>. AKKN.MUA, Muor.'.: .\. N. H., 1843, p. .".4'J, 9. I'. 4; K. H , 21. t , 27 ; RhI.. S. I >., 2. f. 1".; Frit , 819, 8, (. 17. BoRKKHi. (irev.; S. H. I)., •".(», T. :;3t>: V. 11.. 8^j. f. 5-7. Ordinarv imd sixinm^rial t'riistiile.>i. siL< ATA, ( " MiiriniO Kl.rl..; K. H., 2, f . 7 ; Al)h.. 1870, 2, 1, f. 72: V H , '.H, l'. Ki; Jiiii. (Mian., p. 2G. l.\, f. 8, 4, == Ortlmsira marina. (JLAVIOKKA. Gnu..; V. H., 91, !. 1. 2. oKiOHALCKA, K«. ; S. B. D.. II, p. 01, ."A f. 337, = Or- tliosira oriohah'ia : W. S., :^ Galliouella, orichalea Khrb. " 3. 4. Via. .V7. ■' 8-11. 12-15. " It). KiKH. 17, 18 Jt i I'lato 1,\-1I1 I i Ms ;i ! ; 'J ii -I ) : ! II ■ '■ 1 [hi •! 1 J : H 1 ( 11 ■t t ii, i IK- 'iuiiri's iniii-iiifltd 'iiN' (llmiii't. 1. MAsTo(i(.Ni\ s -^liould lie iiKirc lieiisi' iinii tlie lines like tisr. :!. I'l. •_'4. f. I. ;!. " siT.Tll.KS, VMr. .lapniiicii, Cast., IK, f. 4 ; Bail. N. Sp., 10, f. ]■>■ I'lit., .sl">. .'), r. (id. 4. l'..i)<.8tKA u«!is, (inin., 1S7S, p. :'-:.; .1. H. M.S., IST'.i. p. ti!»l. '21, I', (i. iIvAi.., Id, f. ;{2fl ; Prit.. 81.-), 5, f. «1 ; Sm. Sp. T., No. i'l'I ; V. H , 84, I. 11, 12. Parasiiic in pol.v.HJi/lioriia, fig. 19. Figs. •). (>. 7. .s. FiK. i). {( 10. " 11. Ki;;s 12. i;:. (i 14, !.•). Fix, iti. u,. I'l.llo 1,1X. I' i^' i 1 1 In PLATK LX. Kiiini-t's iri!ii;iiilii' i * ■ r Fiif. 1-4. V\^^. S, 10, " '.t, 1-J. Fig. i:-;. F'lKs. 14, !■"> Fir. It). ( vMATni-i.KruA soi.KA, S. li D.. Id,':. 7H ; I'fit, 7*1:'.. !♦, f l-V); i(i, f. SI; M. !)., V-', 1. --'4: S:u.Sp. '["., No. 114, " KM.II'TICA, S. !',. I)., 10, I. ■ ''fit., 79:!, », t'. 14'.i; M. 'V, 12, r. •!'.■ \' !i io, f. 1-4, jiiiiKKNirA, \v. .»;„ s. :»,, !' ;,, r, ;!i : sm. sp. T., No. ll:!: \'. H,. •-•"), r. :!l, I'n.iit and , N, and i;. S|i,. |i. .">, I. r. 4. L^•\vi^, I' S, .Sea H(i:ird. " ANi.ll.AlA, tiiev. T. M, S., Isf.'J, [I, .S5). "I, I, 1, Cul. ( iliaiio. : : ;S ,t I 'I'. to hX f trr- ^W i\\ ^ I II •M ' r I I if! ■'.■it \ ic». 1, 2. FiK. Figs. 3. 4,5. Kig. »i. v; igH. «, ». (t 1", 11. He. !'->. i;<. Figs. 14, 16. PI.ATK l.XT. Kl({nre» itiHgniAed .5(10 (llairiP'"r«. (iKPHYBiA taoANTKA, ( irf V., T. M. S., 18«6, |t. 122, U, f. 7, 8; CnHt., 1887, p. 42, 1'., t". 10. " coNSTRicTA. lirev., T. M. S., 1866, p. 77, 8, f. 2. '• MEDIA, M, J,, 1.H60, p. -JO; Frit., p. 809, 4, (. 49; Mm. Sp. T., No. l)«2. Tkki-hinok MivsicA, Elirl). Mik. 34, (L\,, f. 8; 34. oA., f. 10; R. B., 30, f, 72 ; RhIk S. 1)., HI. 10; Prit., 859, 11. f. 47. MAUN A, L. W, Bailev. B. J. N H., 840, 2, f. 46-48. TKTRAWAMMA, L. W. Biillev, B. J. X. H., 340, 2, f. 50, 51. FVont Hnd end view. " V,nO. viov,» 'it .-rtrieties. Beaiiford, N. ('. MINIM V, i.. W Bailey, B. .1. N, H., 340, 2. f. 54. " Ml sicA, Knd vi* * of large form, from Florida. " iiv>td H'iewH of larifer foriiiH, Sni. K. i7. 50, . %0% I'l.lfo liXI i li f it Ml I ! i % ;i ■ '■ ■'1 , ilr 1;: IM-ATK lAII. Fip. l.lfl). Stkpuaxoj'YXIs c tiKoNA (inin.; \'. H.. HIV. f. Id, 11: Sdun. Al.. 12H, ('. Ml; i:^<", f. H(). pijj 2. " spiNOShsi.MA, < iniii.; Nclim. At., ItilJ, f. I''^- ,. _^ « i-rKKis, \'ir. l•l■:l^«si|linll, (inii>.; Scliiii. At., !:!<•, f. .■>7, 1 1. Miiiiierev. .. 4. SuKiMi AN Ml .- MNKATlis, Ehrl.. Mik., X\, \'A, I. '!•>, = CcMinotlm- I'us liii.'uliis. ,S. Stkfiiamu'YXIs All lata. Klirli.: S;. I- •-i!"'- Klirl.sMimiiviliilieifi(t,= l'v\. HflUiiitn, var. )^ " (Sif|iliiiiiu|).vxif.), i.iMBATA, Khrli. Mik., IH, I. , ; Prit., p. SI*:.. i< rj " (.Stci>li!iiH(|iyxis), (iiiyiATA, Klirli.; K. Her, 1^41, i'. Sti. Mik., IS, f. ti. .. 1(1. " (I»i.ty..|,yxi.s), i,KN.>, K. Hit., 1S4.">, p. H«: Mik., IH, 1'. ."); IVil , \<. S-Jf). "11. " cRPtJiATA, ride lis;. 7. Fij:>. 12-lf). STKPHANOPYXis APfESKii'ti.AiA, Khrli. Mik.; IS, f. 4: Sdiiu. At., 1:H), f. IS, Ml. 2), 2;h, 24. l.-i_, iH. « AiMiiui.ATA, Kl.rU. Mik., IVt. f. 1.'., = Pyxidioula, a|ii('iil:U:i. '• 17. Hyxioici'I.a compkkshx. Hail. M. D.. p. 40. 'J, f. K!, 14-. Sm. Sp. T.. N.,-^. 48(1. 4.'U. IS. MA8TO«ONtA .SKXANGII.AIA, Klirh. Mik., 8:^, 17, I. 12. <• lo Pyxidicui-a L'r{(t:(ii,AHis, Kliili. Hit.. 1H44. p. sti; .\Iik.. i:i, f. :r) : Mik. HC. I 41; Abli., 187 r), 1. f. .'.. fi. " 22. t^'ci.OTKi.i.A PHVsnri.KA, Klirl.. Mik, ;<:<. 17, s. = Disciplea phvHoplea. Figs. 2:>,24, ()i>ONTEi,i-A OKTUSA, Kfj., K. H., IS, t. «, = HiH.li.lphia, aurita and ol.iiisa; Schin. At., 122, SO. Nearly allied U. Bid. luetm. '• 2o, 26. Htm.ABU'M (Stylohibliiim) ci.YPKf.s, Ehrh. Mik.. as. 2, f. IS; Sm. Sp. T., No. ")>; Ore)it<>n. ' Fig. 27, XANTHtopYXiP ftNGt'LATA, Khrh. Mik., .13, 17, f. IS. \ a. " 2S. LfTHoitF^MiUM roNTBACTUM. L. W. Railev, B. J. N. H., p. HSS, I- f. K. Grwsnport, N. Y. Of doubtful value. H. L S. nays this is not a diatom. " 29. CH.\EToc»,ROfi ni»TAKS. CI.; V. H., 82. f. 4. Mobik. " 30. PYXiT>icn-A ftiOAfi, Mik., .33, 13, f. 18. V«. I'l.ilo I, XII. '\ -'I i III I'l.A'n-: Lxiii. Kiuiir»'s iiiii'jiilllc'il 'ptHi illiirMcti'i>. Kii;. 1. Navii'ii.a kntomun, I'lliil.. K. II.. 'J.S, r. 7 1; Srlnn. .\l., i;!, 1. 11! IH. IS. 4!»; t'lisi. Cliiil., -Jd, r. Id. •' 2. I'lH.vi'M A, itit'li; l,t'wis N. ;iii(i K. S|i., 'i, f 7; \'. 11. .\, C. 14. •' 3-"). Tkhkka I iiM V \KiAiiii.i, I'liiKliiw M. .1.. ix")'l, 1 1. "270, 17. f. 18; 1'. M. S., ls(i(i, p. lilt. 7, f. 7. rt. ri:i(i'.'iiNiiK V MKiiiiAN \, K;ill>, I'lii., |>. >-'iIi ; ( iiiiii.. l.siis, |,. -j:;. 7. Sy.i llA IIA.N A, ( 'i^l., |i. hMi*. I'. II. \':i. • S(29i. liHAiMioNKi.s \K. iiini, OM. .\!..I , ISIw, p.-2l7, 7, f. I-J. i'n)liiili|y uiil\ ;i v:ilvr iit' ( oii (iiici> ; < '. ('u!;|"i, |p. liJS, t. I'. I .H ; M. .1 . l-".t; 7, C. I, •_'. ll-i:;. SvsDKNDHUM HI M -i; \i \, I';!, li i. M il< .. :i"i N ■ I >. 1. U'' ; M. .1. l'''>i>, 7. r. li' -i'.!; .M. I>., 1:1, r. -'it. " 14 111. l,iu MM-cis MINI Ti - ( Jrcv. r. M. "!., l.>l>."i, |i. 47. -1. t'. I'. I'ifi. 17. liHAliKUNK.MA AILVNIKIM. Kilill Mild -I'llllll/."', I>ull. '\\>r. Hot. (lull. Mar. h lN>',t ^). 7"., IM. ■<». f. 7, 7:i. Aiti'sinn well, Aihitilic ( ilv, .\. J. ('(i((i, Khili. .Mik., '.7, M, I'. 2. < H' (liiliiuii- viiliic '• KihiMiiKA, Hhrlt. Mil< .:!■">. A 7, I". 2. ( 'iimi..t icll ;a lhi> • hiv wIkii iIusi' i\v" lii;-'. 1 IS, !9i reiilly iiri'. MkI,()-1RA llnKOMMUlM, Hilll's I'lit., |i. Sll*. .'i. f. iVl. S'l'KI'll AN()IH-<( IS MINll'l'-, (rl'llll.; Sin. S|i. r.. Nil. 1, = ( viIouIIh Orf^oiiira, Khi-li. Mik., ;J7, 1', f. .'>. KiiAiMioNKis AKFIN1.<; (IniM.; i;a|i|p,-ili;innc)c CliH'. rti^'ani^., IM. •27, r. -Jdt'.. I'Kl'Hdl'oMiANA, ' Jiiiii.; I'olPislxii ■;, \a. I'liuarns., •J7, r. 'H>^. " 27. Di.MKRKi.HAMM \ I'ossi Li:, ( iniii.; rnu'ains, 27, ('. "iti.i Md. •' 2S. HiiAi'MONKis I •NKAHi', • Miiii.; I ' Hi,'.! 111'*., 27, f. 2i)2. Ni.itinyliani, M.i, •' 29. " MicjiKin. fiile 11^. s. FiK*^. oO, 31. <'Yfi,(.iK.i,i>A cdMi'iA, Ki;. \'. H., 92, 1". Ifi 22. " \Vl, :«. DeNTICI I,A ANTII.l.AKIA, ( It'Vl'., 1H78, |'. 14, 4, f. 2t). l"i>r. 34. L'X.MllKM.A Stuudkhi, Clevc; N. li. K. I)., p. "i, 1, 1. •">. II. I., S. Hiiys ligiire \h ton M-rnrnPtrical, louks loo nwxih like Naviciila. Copy from (lew. is the only oiif at hanfl. Fips. 35, 36. Cocci. NKi- wihict-a. (inm., 18(i8, p. 14, 1, I'. '.I; V. H., 30, f. 8 10. = ( '. ( alifornit'a, (rr. Fig. 37. " Ki..>N«ATA, Khrli. .N[ik., 7. 38, f. S; 14, C. 31 ; 8, 3, f. I., i'Xwrrz: ( ', plai'f nl Ilia, var. " .'18. SvKnENnRirM i>iadf;ma, (jrcv., '(W, tigs. 1 1-13. " 3&. Hhaphonkis Ki-i [s ? Klirli. ii 18. 19. Fi«8 20, 21. Fitf. 22- •24. i( 2.-.. 26. |u \m J'latoIA'IlI i f ii ^ Vl >^ '-^^ ^^^ .^ ^ IMAGE EVALUATION TEST TARGET (MT-3) 1.0 ■19 y£ 1^ I.I Hi U 11.25 llli 6" Photographic Sciences Corporation // # .^ .<.^ v^ ■''^>I^ ^o 23 WEST MAIN STREET WEBSTER, N.Y. 14SS0 (716)S72-4S03 •^^ A \ ^ K ^ i?ig. i. Fig«. Fig. FigH. Fig. 2. 8,4. 5-7. 8,9. 10. 11. 12-14. Figs. 15, 16. i>ri.i'HiA, iZygooeros'l orcinKNTAUS, L. W. Bailey, B. J. N. H., p. 343, 2, r. 66-68. Prol>ably a small variety of Z. Mobilennin. Anai'LI's (Biddiilphia) BiRr).«TRATT'9, V. H., 22b, f. 16; 103, f. 1-3. Cul. Hemiacliis APFtNis, (Trnii. ; V. H., 106, f, 10, 11. (tomiothei'ium oi)ostki/.a, F^hrb. Mik., 33, 15, f. 16; 18, f. 94 ; M. .J., '866, PI. 7, f. 47, 48; Prit. p. 864, 6, f. 29; V. H., 106, f. 11, 12. Hkmiai'U's Poi.YCYSTiNORiM, Ehrb. Abb., 1876, 1, f. 12-16. Rhizo,soi.ima (?) Pii.Eoi.us, Ehrn. Mik., IH, I". 103; Prit., p. 866. Hkrcotheca MAMMILARI8, Ehrb. Mik., 33, 18, f. 7; Bot., 867,7, f. 36; M. D., 43, f. 31. Hkmiaitlu,« poriYCisTiNORUM, Ehrb. Mik., .36, f. 43; Abh., 1876, 1, f. 12-1.6. " BIPON8, (Kbrb.) i,K\iA •'., Prof. A. S. M., 1«K2, |.. 177. ■I, f. Klrt. " -2. •' Kriknsis, II. L. S. Lens, 1. p. 4-1; A. (l .1. M . 1S7S, |i. 1.'), :'. f. 7; Srii. Sp. T., No. 447; V. II„ 7'.i, f. !» Kij(s. .V".. " A.mi:hi(\na. (Kliil..): l'.ri>;lilwt'll, M. J., ISoS, I'l. 5, r. :!. Ki,,. ♦;. " ("ALYi'TRA, Kl.rl..; M..1., IM..-.,!. -J, ISoS. Copie.! liy Hritflifwt'll. " 7 « oHNii h(m;i,ossa, ( Khrli.): r>riKlitwell, M .)., 1S")S. .'., r. 1. .A. Vitr. cjilypti-ii, (ijj. t>. I'ik's. >!,( 17, IS). I'YXii.i.A Vmkkicasa, (liim.; V. II. h:I-, f. IS. " '.I, Id. ('HAKioiKitos iNcruvuM, liiiil N. Sp„ 9, f. :><>; M. .)., l>; T. M. S., 18tio. 4S, 2, f. 18; 152. 7. r. i;!. " i-j, " DiiiYMiis. Klirl). Mik.; ;io.\, 17, I". •') ; 18, f. 4 ; M, .1., l8.-)(;, IM. 7. f. .•'.-7. " i;;. •' (;Ai.iKoKNiriTM, (Jnm.; \'. II., 82, l)is t. 8. risis. |4-Ii). '■ DiiiYMi-s, lOlii-l). Siime ;is I'lK. 12. •' 7, 18. Py.vim.a Amkrkan'a, ride H^. >;. \.•\^r_ 19. " sriu-i.ATA, (Iniii.; \'. M, SS', t. ti. I'ijrs 'JO, lis. ' liilKKAI.K. Hilil. SllllU' il.> lig. 1 1 . Ki^. -21 Kyxiu.a KiTToNiANA. (4ruii.; V. li., S:?, 1'. 10,11; 8.S, Ms f. 9-1 1. '• -j-j. (H AKTotKKos MONu;.K, (rnin ; v. H. 82, Ilis t. 4. " lM. I'YXii.i.A DiiiiA, *\: VI. .1., lS.-)Ct. K, f. 14. .' ;{^ 1. '• (("reswclliii, (ivov.) TUiiRis, Riilfs. I'rit., 82(1, •'), (. 74: Sm. Sp. T.. No. .V)? ; V. II., S3, tris f. 1-J. pi^s. ."), (i, 7. " (CrcsswclliM, !), S, f. \r>, 1(>. S. !». ('y( i.oTKi.i.A Kui',T/iN, f. 47; H..I. N. II.. p. :W1, 1. f. 1".: Sin. Sj). T., No. lOX; V. II., '.M, f. 1, 4 6. Fig. 10-12. " i!..Tri,A, K. B., 2, f. 4 : -S. P.. I>., o, f. .->(); Sm. S,.. T.. No. in. " l.S-1.5. " .MKNWiUiNiANA, Ki{. K B., 30, ('. '18; Sni. Sp. T.. No. 104 : V. H., 1»4, f. 1 1 13.=(;. .Vstniea, Kj?., = ('. < )rt'}{oni('ii, Riilfs. Figs. IT), 17. " STRIATA, (inin.; V. II., ".Vi, I'. i> -8. " IS, 19. " AKTiQiA, S. H. I)., 5, f. 4'.t: V H., 92, f. 1 ; Sm. Sp. T., No. imi " 20, 21. " .oMPTA, Kk. V. H., ;t2, r. lH-22. Fig. 22-24. ■' (H'Ki{< Ti.ATA, Kg. K. B, 1, f. 1; Ral). S. D., 2, f. 1; S. B. I>., •% f. 4S ; M. D., 12. f. 21 ; V. H., 93, f. 22-24 " 2"). PoRPKiA .jiADRicEPS Bail. I'ril., S.'A 6; f- <•; 'I'- M. S., 1865, p. .■)2, ti, r. 18, 19; V.H.,9ol>isl'. 14. (lump. Bay. STiaMtANoi>is('tis(;AR(:;()NKNsis, (iruii., V. H., 95, f. 1,2. N. .Vmor.? Niagara, Eiuh.; V. IT., 95, f. 13, 14 ; Sm. Sp.T., No. 505; Mik., 35a, 7, f. 21, ■.:2. FoRPKiA itiJADRicKPS Orev. Trans. M. M., lS(i.5, 58, f. IS. Plaoiogramma, (Irev., T. M. S., 18()fi, PI. 1, f. 3. (3). EucAMPlA VIROinica, V. H., 95, his f. 6. Richmond, Va. PoRPEiA QUADRA lA, (irt'V., V. 11., 95, iiis f. 15; T. M. S., 18G3, p. 65, 6, f. 20. Santa Monica. Figs. 34, 35. FiK^AMPiA /...diacus, Ehrb., K. B., 21, f. 21 ; S. 15 I)., (iO, I. 299; Prit. 9.S7, 2, f. 43; V. H., 95, f. 17, 18. Figs 26, 27. i< 28, 29. Fig. 30. 31. 32. 33. I'li.l.. I,.\\ rif., J). ., 82(i, S3, tris ., H'ili. X. II.. V. IT., Sp. T.. Sp. T.. iPii, Kg., Sm. Sp. . H., it:', 1805, p. inp. Bny. . .\nier. ? D.Sp.T., 1863, p. I), 1. 2m ; 8. ii • I'hATK F-XVn. Klsrnri's iniiL'iilllrd "ioii cllmnpfprs Kit,-. iMiT. rii-s Fi 1. Ha. ,1 ;,x-TiirM Kiit. vtim. Sl.ii.l.: T. M S., 1851. p. 14. 1. (. 1; I'ril . SC.:!, (i, f. -jti. •J, ;!, 4. " \ uuANs, l.iiiiil.T, T. M. S., is(;4, p. H, S, f. l-(i; Sill. Sp T.. Ni>. '"iT, =■• l'>. ciir-iituiii iiml fiirciilmii. -). Pki:iptimi\ ciii.VMYDOi'iiiiHA, Klii'l). Mik., M.'i, 18, f. !»rt; I'rit., Stl.'), S. f. 'J.'). A iiDiu'iiiitv, eviili'iuly only ii fri^f- iiifiil cil' Didiiiiiit or the like. STKIMIANO(»n\lA V. I|N01TV( Ills. Kllllt.: V. H.H3, IPF. f. '2-4. (MilS- touoniii ). Stki'Iianoi'vnis mmhaia, KIhI.., IS, T 7 ; V. H. 8:!. ler. f. 11^. 14. ( I'vxiciii'iila liii.ltMla?). Stf.piianoooxia iMi.YooNA, Klipl). Mik., .'W, 18, f. 1 ; Siii.J., .\piil 1845, p. :V2t>, 4, f lo; M. D. 48, f. 80. STKriiAVdPYMs ('ami'Kaciiiana, (tiiiii.; Siiiiii. \t., f)5, f. 19, 2(t. Stki'HANocoma (CliKloiiraiiimii) Camkounh'IM. (iriin., 88, liis f. 18, 19. TiiOciio-^iiiA siMNo.sv, Kitt..n: V. II. 88, his f. 14, 1.=). 17. Noitiiiif- llMlll, M(l. STKPHANo(t()NiA I'oLYcoNA, Khrl>. MIk., 83, 18, f. 10 ; Sill. .1., .Vpiil ls4."i. p. 82»), 4, f. 13; M. .)., IStlO. p. (18, T), f. 8. Pkriptkra TKi-KAci.AniA. Kiirb. Mik., .88, 18, f. 9. .\ xenu.s of (loiibtt'iil j!;ennineiiess. Still no liiinu in retiiin- iim it ii8 (loos V. M. V. H., 88. ter. f. 7-9 ; Prit., p. 8«r), (i, f. 80. 20. SiKPiTAN-oi'Y.Vis ( ORONA, ; V. H., 36, I'. :tl. .Iiiduiiitr I'v Oniii.'s original figure, tliis IIIIIV ln' II ("orcdni'l.-- Staukonkis MtiMMmAMMA, Ku.; K. I!., 29, 18. " MONiMiKA.M.'MA, Kliili. ( )ni' ol' Fill l).V (linil)tl'iil species, 111' Maw only a t'laumciil ; pniltalily H. gracilis. Navicula (iimiA, (not Siaur(i|>tiiii, llal>., 9, f. 3); K. B., 28, f. 70; Hclini. .\t., 45, (. V>-h] -, V. H., .\, I'. 12. Dkntici'I.a vamka, forma niiijor IVdiiinu ; V. II., 49, f. 4-H. ( ieysiTs, ( ';ii. Navici i.A riiiNoDis, S. I!. D., II, p. 94; Lewis, N. and H., Sp., ].. 8, 2, r ti; V. II., 14, I'. XI a. " Hkaunii, var. Stanroiu'irnriiii', (irim. ; V. II., ti, f. 21. Dkntkdi.a thku.mai,!-, K. I!., 17, f. ti; Kali. S. I)., 1, I". 3; V. H., 49, r 17. IS. i.auta, Hail., N. Sp,, it I. 1. 2; V. H., 4i», f. 1, 2; Siu. Sp. T, N.I. 12.'-». CoM.Kctonkma siMW'oiiAK.HlONs, Tiiwailfs, iSilii/.()ni'ina lai'ustris, .\k.); V. II. 1'). r. 41); S. H. I)., 5(4, f. 353. Bactkkiaktru.m cuKVATiM, Sjiiiil. T. M. S., 18.")4, p. 14, 1, f. 2; M. I)., 43, f. 18, = (li. varians). Tahbij-ARIA SdiiosA, Flirli. .Mik., 14, f, ■)4; 4, ."., I'. 24 ; 3, 4, f. 31. " KoiiisTA, Klirl.., 33, 11, f. !•■); I'ril., S07. EUNOTIA HiiEl'H, Ehrl.. Vlik., 17, 1. f. 25; 3, 2, f. 12; K. B., 29, f, 155. Stauiuj.vkis I'usiM.A, Klirli. .Mill.. 1S70, p. 59, 2, I, f. 4l». Very nearly it' not (|iiiti' the sanu- aw tig. 6. (iKAtiLK, Mirli. Mik., Iti, I, 1. 4 ; 17, 2, (. 15 ; 17, 1, f. 5; K. B., 29, 1. 3. Ki:. 53, Fl. 2, 2, f. 9; areolation, more or less distinct hexagonal. Htim- liold valley. Oregon. Hyalodictya Dianak, Ehrh., 1S70, p. 57,3, 17. Bacii.laria paradoxa, Omelin. Sill. .]., May, 1842, p. 101, 2, f. 5; S. B. D., 32 and tiO, f. 279; Frit., 784, 4, f. 19; 9, 1". 166, 167. rial.. I, will I <0; I i IM-ATK liXIX. l''lttin'i'S iiiiiunlfli'd Mki illuiiiclcrx. l<'i>{N. 1,2. PonoKi'ilKNlA lUiLKYi, Ivlwiinls; Ia-wIs, N. miiiI H, p. », '_', f. 8 ; Sin. Sp. T., No. I"j;{. Ni'w JoiMy sliori' (^ Lii'ni<)|iliiii'!i, Hiiilfvi i V\i:. :i I'(iiM,Mi<.\ VAUiMiAlA, A. S.;Srlim. .\t., Nil, f. .S. Siinia MonicH. Kius. 4, 5. •' MACiii.ATA S. H. I), H), (. ;W.S; Sm. Sp. T., No. 420: O'N; I. I)., 2ti, f. oil. " H, 7. TkK KRAIIIM I'KNTAt HINTS, Witllifll ; M. .1. I .^oN, 12, f. 10-12. ( ,\iii|iliitt'lrii.s oi'iiiita). Kijr. 8. AlTINOCVfLlIS TKIllAlMAns, Kopff, M. .1., l.H."))S, p. 2.S-8, I', o. Hil, ari'oliition iiikUt hinlu-r powt-r. " 9. ArriMsri-H sirhs, Klirl.. Mik , :t;!, 1.^, f. !>; T. M. S., IHC.U, p. 147, 7, t'. 14. Ciiirifil aloiiK for veins, proves to be no (iiiitoiii. " 10. SiRiKKi,i,A Katkayi, .\ . S.hiii. At., 21}, f. lS-21. Viineonvers IsIi'IkI. '• 11. Stii.tu1)Ks.mis cKATicriiA, (Jri'V.; C^nrireliii iiiitifiilii), II. L. H.Sp. T., No. oOH. 'riiisisiir; Sclmi. At., '>;;, I', ."i. Saiiir us ('iiiii|i. iinpfi'iiilis, (inv.; Sclim. At., o'i, I'. 7; •');>. I', (i-7 Fifj^. 1'). !•>, iH'i' |irol)al)ly only viu>. of llodjjsoiiii. •' 4. " Sa.moknsis, (n-mi.; St-lim. At., 1."), f. IH-JO. Figs. ."), 6, 7. " AROis, Biiil. M. ( )., p. :i9, tJ, f. 24, 25. Hudson Ki vt-r. " S, 0. " HAvn.us, W. S., S. B. D., (>, f. 5ii ; Piit. \>. 801, 15, f. 22,23; V. H., 77, C. 2. " 10,14. ■' l.iMBATts, Brelt.; Scliiii. At., 17,f. 1-.!; «Jrim., 18«2, p. 44(1, 9, f. 4. Fi^. 11. '• KAi'Kisi ,s, Eliil>.; K. .Vmer., p. 122, H, 7, I'. 14; K. H., 28, I'. 12. Of (liihioiis Viiiiu'. " 12. •' HrMiioi.DTii, Khi-1.. .U.li., IH&l, K, f., ;!. " 18. • Mkxica.ms, Kliil> Al)li., 1.S72, 20, f. 19. " 15. " .MAR, p. ;{(», Fl. 1, f. 2. (ill. " Irt. " Samuknsi.«, S(4iiii. At., 19, 20, (ompiire Hg. 4. riic latter two appear closely allied to C Hodgsonii, li;;. 3. prohalily merely varieties. \ I ■hii. 1,XX 4 [ PLATE I.XXI. Figures luugulttoci 'm diamotors. Fig. 1. Figs 2,3. Fig. 4. 5-7. Fig. u S. 9. AoLACODlscus, I'ULCHIK, Norm. Prit., 845, .S. f. 25; griinultis rmli- di:ite and ratlier roarse. Campylodiscus HIBERNUUS, Elirb. Milt., 15, A f. 9; f?ciim. At., 55, f. 9-U5. C. costatus, W. S.V HELiuPEi/rA NiTiDA, Urev.; T. M S., I860, \). 5, 2, f. 18. Ca.mi'YLOdiscus NOKicus, Ehrlt. Bet., 1840, p. 205; Sihm. At., .')5, f. 8 ; V. H., 77., L 4-6. StICTOUISCUS GitEVlLLlANU.", W aiul C, 1., |>. 5, 1, f. 4. Cymatopleuka cAMPYhouiscus, Bail. B. J., p. 350, tig J, (|. F; Sni. Sp. T., No 64. i\ ; M.ii- 1,X\I ni.li- At., [., ")5, q.F; I F- i PLATE liXXIl. P'igiires ini«{;nitic(l '*W diiiiiR'toi's. p\fr_ 1. C.\Mi'Yl.()i)is(jiis iMPEiiiALis. Cirev. T. M. S., 18t)0, p. 31, 1, f. 3; Schni. At, 17, f. 20 ; 52, f. 7 ; 53, f. 6, 7. C'iiin].. Bay. " 2. " BIFUHCATAS, A. S.; Sl'luil. At., 52, f. S. CiUUl). Bay. " 3. " AUORNATUS, A. S.; Helun At., 51, f. 5; 52, f. 3. Canij^iHchy Bay. '■ 4. " Ralksii, S. B. D., 30, f. 257 ; Schm. at., 14, f. 1-3. Striae more decidedly radiate than shown. » 5. " 0, p. 30, 8, f. 2; Schni. At. 18, f. 16, 17. " f). " c:ONCiNNUs<, var. lineatiiH, Grim. May be a variety C. Hotlgsoniis or .)f imperialis. Caiup. Bay. It.i.. lAXII, ( Fir. 1. II 2. II 3. II 4. Figs 5,7 Kifr. (). PLATE I.XXTTI. Kiirinvs nirtKiilflprt •'>"« (llninotors. (JAMPYLonisrxift MuLT-ERi, A. S., Schni. At., 14, f. m. " AMUiGtrus, Cirev.; Sdini At., 18, f. 24. « Clypeus, Ehrl). Mik., 10. 1, f. 1 ; 2, f. 21 ; Abh. 1869, 1, F, f. 1 ; K. R., 2, f. 5 ; V. H., 75, f. 1 ; Schni. At., 5r,, f. 1-3 ; 54, f. 7, 8. TABULATDs, A. S., Scliiu. At., 54, f. 4. Camp. Bay. EcHBNEiR, Ehrl). Schm. At., 54, f. 3-6; V. H., 76, f. 1, 2. Sf'HMiDTii, (Trim.; Schm. At., 15, f. 12; 53, f. 10. Var. of C. irrperialis? i< (I |i i Ahh. , f. 1; ». Bay. 1., 76, f. 10. 'I..I.' I, Will ^^^ \' I'liATK i.xxrv. Kl\{iiri"i iiiii>;nilliMl "kmi illiiiiiotiM's. h'if;. 1. (;os(iNonisriis C'lJAssi.Ts, (Oji«|H'(|(MliHtiis) Hail.; Sill. J., IS.'w;, p. 4; Schm. .At., <>1, {. 19. Virginia. I-'Iks. •_', 4. •' Snr., Wiiliich.: T. M. <'., ISHO, p. ;{8, 2, f. 12 ; Schm. .\t., nS. r. 41, 42, 4H, 47 ; V. H., 12it, f. (1. In- sorlod iintler the impression tin' iliutums wtTt- fodiiil in llie fosHil deposits of Viryiniii. -Are properly Kast iniliii forms. V'm. ;i. I'liAspKDOiiisrtTs MicRoDisciTS; Klirh. Mik., '?:!, 17, f. 4 ; Frit., p. 8IV2. " ."). " is(»i»oiiu.«!, (<'<>'«'inodiseiis). Klirl). Mik., HIi, 17, f. .S. N'irginia. Kiys. 6, 7. CosfiNODisrus patina. K;;. K. H., 1 (. 15; Sill. J., 1K41, 2, f. 13. var. .VcTiNOiTYcnus iMiNUTr.s, (irev., T. M. S, !86(i, p. 5, 1, f. 12. Mki.ohiha Baii.kyi, (Cesto(lisciis) Am. Q. J. M., 1878, p. 19,3,1'. 9. .\( riNoiTVcHi's (iRUENDi.Kin, Selim. At., 100, f. 4. St. Monica. " f>M)ULATi;s, var. Crennlatiis; Schm. At., 1, f. 1-4, 109, (. 1; M. D., 19, f. 7; V. H., 22 bis f. 14. Maryland. Co.>, 4, f. 14. ('al. Fig. .s. Kigs 9, 10 Fig. 11. (1 12. (( 13. It 14. a 15. It 16. (1 17. <" It, I. l.\Xi\- f 1 \ I ) : ( i'l.A'IM'. I,XX\*. I''lulll'i'> IMI^Ulllll'i'll ''>m ^MANiH, rdriiiii minor. ^nin.H.x, A. S. Srhin. .\t., 7-1, f. 11. St. I'"rnncis(c. (ill. .\|i|ifiirs vprv lu'iirly reliited to Ariiclino- (iisciis. " (;ai,iF()HN'H i>, \:\r<. (Jrev.; Sclini. \\., 74, 1.9. " *• v;ir. fiuMiiitii, I Irini.; Sflini. At., 74. r. » H. " Cai.ikoknh IS, (iifv.; l;()s .\Mi;i'lt's, Si'lini. .M., 74, 1'. 4. Ki^x. !), !'•. " KiTTdMANtsScliin. At.,74, f. Hi IS. Niitiiiii;lmn),M. ■_';i-j, H>, r. 12. '• 12. ( V)>MH)l>IS(rs TKMls, (irev.; \' . II., I'J'l f. \',\. Fii* miiiiiiltliMl 'lOii illiimi'IcTs V\n». 1. •-',•<. KiK. Ki«. uiui s Kliili,, s. It. I>., t. 1. Hit; I'rii.. S4H. tl, t. '^ ; H, )• n ; I.rns V..1. ll,|i.'J9; V. M., 117, I'.;'., 4, .I.e.. I-'IcmkLi, dr. Colls iisiKtlly (if (iiiiri' nr less Mi'\- iiilt' itii|M';iriini't'. " l!o.iKKsii. Kiirli. H.-r.. is4l; S.liin. At., !f_', 1. ■'). N..I- linu'liiiiii. Mil. < ells ;ire ^tiiiu'wliiit Hti'lialc as K. :ir({Ms. '• (.rri-Airs. (;ivv.. T. M. S.. IHCi', p. HI, I'l. U. f. :'.. Moiilert'v. liAi.lAiis. Iti'iiW-v; V. II., IIH, r. I, -2; liail., M. (>.. |i. IV.t. •• Cai.ii'oknk I's, inesjiist within the iiiiiririii, H. L. S., . Cn'Ktt'nl < 'it v. I'l .t. I.\X\I I j u ? *: ii I Figs. Fit,'. FiRS. Fijf. 1,2. 3. 4. 5,6. 7. 8. Fif,'S. y, 10. PLATE LXXVIT. Figures iiiagiiitled 'dHi iliamoters. Craspeiwdiwhts KLKii.VNs. Khili. Her., 1S44, \>. "266, f. 12; Sill. J. Apiil 1.S45, |i. .S24, 4, f. 1 ; Sciini. .\t., 66, f. 1. Xottingliani, Md. TmuKRATiu.M AMBLYCERo.'*, Ehrli. Ber., .VI. .)., 18')H, p. 250, 4. f. 14; Schm. At., 1, f. 25. Riciinioinl. Va. '' .•^PiNosuM, Bail.; Ricd.; Sdmi. .\t., 87, f. H AcriNOI'IlYCHUS INTERPI'NI'TATIT.S, Sliail., M. .1 ., 18(iO, |). 94, 6, f. 17. Kieliniond, Va AcTiNoi'TYCHUs Raeanis, Cliaieiiger, lSf<7, 7, f 4. Sa!it;i Monita. EuPODiscus RADIATU.-^, var. aiiti(|ua, .1. |). Cox. Kiclunond, Va., \t- laiitif City, artesian well ; Bnli. Tor. Hot. (Hub, March, 1889. Tkueratium rti'iNOsuM, vaf.-*., St'iim. \i., 76, f. 7. Kicliniond, Va. .»■• i,.\x\- > ! i I KiKx I,--- Ki«. ".-0. FiKs, s, !i. FiK. 10. 11. " 18. " 14. 16. I'l.ATK i..\xvni. Fiiiui't's iMii'-'iiilird liKi (liiimi'lci's. TKIil'SlNnK INTKKMEDIA, tlniii.; Vlir. i'.llU. ToflVV Hot. ("llll>, .\ll. -list, ISSII, Plate y;:, f. -2, -'a. Atlantic City. HiDimi.i'iiiA \Vi;i.-sri.()(ai. .Ian.: V. H., 100, f. 1, 2: (Jast. 1S87, p. lol, •_'(>, r. ■-'. i)<)iil)lfiill.v N. Aiiier. form. '' A .iiifstiniiaMi- variety n( tills ueiiiis. Kain and S,linlt/.e, I'.ull. Tor. Hot. Clnli, \nir.. ISSO, Plate 9:!, r. I. Allanlic City. rHicr:itATii M iNOKNrATiM. K.iin an.l Sdiult/.e, Hull. Tor. Hot. dull, Amu., issii. I'l. 9-J, r. I. Artesian well, At- lantic < iiv, N, .1. '< lIi;n,iM!lMANi M, Kain ami Sclinll/.e. artesian well, Atlan'ie(iiy,N..I. Hull. Tor. Hoi.Clnl.. .\ngust, 18.S1), IM. ".i;! f. :-!, :'.a. •' Surface willi cent nil and an>>lllar elevations; llie ceillirl elevation sliajifd like a triim-ated |)yiainid ; |mnclae radiate and coarser at ei-nter." " Kain'II, var. eonstrictiiiii ; Scliiiiiilt. Artesian well, Atlantic City. Hull. Tor. Hot. Cliili, ISSit, I'l. 92, f. :'.. .\(TiNn])i.s( rs .Vri.ANTicfs, Kain ami Seliiilt/e.aitesian well, .Vtlantic City, N. .1. Hull. Tor. Hot. Cluli, March, 1SS9, PI. 92, r. 7. Hesendiles a form of A. sjilendens. KlNoTiA Amk.kwana, Kain and Sclinll/.e, artesian well. Atlantic City, N. .1. Hull. Tor. Hot. ("Inl.. Aiit;., l>i,s!i, PI. !I8, f I. .VuTiNOPrYciii'.- iNiii i.Aris. var. verrucosa; \V. and Cliase, PI. 2, f. \ SvMiiKi.oPiioKA TKiNiTAnw Klu'li. Her., 1S44, p. .SH; Sill. .)., April, I.S4:., 4, f. e; M. Die, 19, f. «. Prof. H. L. Smitli. thinks this is iiothinj? more than a rounded fragment of Triceratiuni Marylaiidieimi ; rounded fragment of Triceratiuni hence, of no value. lUNBKNANT, (ireR., T. M. S., 1857, Fl. 4, f. 48. Transf. U. till a va(;aiU space. (.'HAETOCKRos (didymus, Khrb.)? Hull. Tor. Hot. Club. AiiKU^t, 1889, Plate 92, f. 6. ArtcHian well, Atlantic City. Discus ' I'ial.. IXWIII Hot. , At- I \ PLATE LXXIX. KiKiTcs iiiasiiiiticd 'iiHi (liiiim'tcrs. V'm. 1. Aui.isfus Haud.mani.vno, (iri'V.; T. M. S., ISO*!, p. (i, 2, I'. i7; Si-hn:. At. 67, f. 1; 89, f. 4. Fit,'s. 2,8. " ITN'CTATUS. Gniii.; Sclim. At., 80, f. 10. Fig. 4. " spiNOsus, F. Cliiistiun ; Selim. At., 12^, I'. 2; Bull. Torri'v, Rut. Club, Msireh 1889. Figs, ft, H, 7. " RFX'Ticui.ATUS, (rrev.; T. M. S., 18(i8, p. 4(), 2, f. U»; Schin. At., 80, f. 1-8. " 8,9,10. '• Clkvfj, (i im.; Hchm. At, 81, f. 1-4. • " 11, 12. " (Jkinowii, var. Calitbrnica ; A. S., Sciiiii. At., 80, ('. 14; 89, f. 7, s. " 13, -A. •• I'RUJNOisf.-i, Bail.; I'rit., p. 845, 6, f, 1 ; T. M. H., 1868, p. 48, 3, f. 18; .Schin At., 31, ('. 6, 7. ,1, I.XXIX 11 •> 8. 'J. 10. 11. iMiATR LXXX. Kl'.'iircs inii!fnlH('(i .'^Ki (lliiinotoi's. AiMwis JoHNsoMi, .\. S., Sclim. At., ()7. f. 2. Crescent ('ity, (mI. " sPEciosus, A. S., Sclini. At., IDS, f. '.i. Santa Monica. " Hli>DiLi'HiA, var. Kilton; Schni. At., 89,1'. 2. Snntii Monica. " Hii>i)iM'Ui.\, Kitton; Sc'im. .\t , (><, f. :?. " isTK>*TiNALis, A. S.. Schni. At. 108, f. 2. Santa Moi.ica. TEXTIMS, A. S., Sclun. At., 89, f. 5). " f'AKiBAKrs, Cieve.; Schm. At., t)7, f. 9, Kt. " iNCKUTtis, Sclini. At., 89, f. i9. Santa Monica. " AMERicANi's, p:iiri>. Mik., 83, I'. 14, 2. Norwicli, Conn. Proii. a var. of .\. sculims. Ari,A('()Dis<'iJ.'< RofiKKsii, (Kiipodiscis) Eiirl). Ber,, 1844, p. 81 ; .NM AN A. (AstcMinpliiiliis) Grev., T. M. S. 1S(50. p. 1 1 1, 4, f. 1.", ; Sni. Sp. T., No. 4it. " 2. " MoKoNiKNs, (Jrev., M. J., ISfiM, p. 2'M), 7. I". H, Sclini. At.. ;. FiKiire shdiiUi Ik' sdMiewliiit «>voi(l. '■ .'). \sTERt)I.A.Ml'RA (iRFA'lI.LKI, (iiev., T. M. S., 1880. p. 1 1 H, 4, f. 21 ; V. H., 127, r. 12. •' t>. Ahtkromphai.i'.s Fi,ABELi.ATU.s <«rev., ('ill. gnano. '• 7. ("osoiNODiwus RADiATUs, Klirl.. Mik., 39, :?, ('. 17; Sill. J., 1842, p. 9.i, 2, f. 14; K. B.. 1, f.,18; S. B. D., 3. f. 37; T. M. S., IHtiO, p. 4S, 2, f. 22; V. H., 129, f. •"). '• 8. " .\wivs, vnr. Klirl). Mik., 21, f. 2 ; 22, -■), f. 8; Scliiu. At., ill, f. 13; 113, f. 7. " y. ' (iioAs, Ehrl). Mik., 18, f. 34; K. B., 1, f. 1(5; Schin. At., ()4, f. 1. I'eils not roiuul, but somewhat angular. " io " siiU('ON(;AVii», (Iriin. ; Scliin. -At., 59, f. 12,13,15; (52, f. 7. II I'Imi. I A'WI ll 3 i\ m I'LA'I'K I AW 1 1. I'';i;m'i's m;ii;iiilli'il 'i'*' (liiiiufli Kig, 1, Al'l.Acniiisri s \i \ Id . \ idiAi i:i », lv;ill's.: I'lit., |i. SM ; Sclim. At., :>7, 1. ! S. ('clliilcs sorncwluil Mniiiiliiv. tuo I'Dllllll ill liuiii'c. " )>, " \i Mii; Mtrr v< r.i s, sinnllcr fnriii, Ciil. Sclmi. At.. :i7, r. 1 S. Kim I(M' litdjid in liijiire. '' :',. " I'ktkusii, IChili.: Sclmi. At., ;<•'>, I'. It; 41,1". 1. "2. Side view. I'loiosiw rc;illy in tlie iiontcr ni till' I'll'Vllll'll llOHXCS. " -1. " si>.m:sis, (iivv., 'P. M. S.. ISdC, j.. l-.'!!. II. f. H; Scliiii At., 8t). r. lli. ChI. " :>. " KinnNii, Am.; I'lit.. p. 81-1. H. f. lM ; Sciini. At., ■M;, f. •") 7 ; 41, f. t); M. .1., isno, p. !»•=>, (i, f. IH. AreolMlion liki- Ctc^cinodiHcns, iriinf or Icsm liexauiiiiiil Figs. 6, 7. " I'ktkksii, Klirb. ; lius. :'., (1, 7 Mi-f viirielii's of the •iiinii" «pecifs. '\''i i'l'>>. l.WXII of th 1 * f I, ii i \i I, \'\'J. I. " :i. " 4, " «. " s. it it. 1(1. 11. I'i.i,- i-J. i.". .. 14. lo Kitf. HI. IM-ATi; I.NNXIII. Klunr.'- im.u'iiKli'cl rm illjinH'ttTs. t' VMPVI.nl.lxl - t ililiKNMlM'l XNO". <*nill.: Scjllll. At., I 'i. f. ■"'. -TKi,i,ATr>, liri'v.. M. .1.. IS.'i'.t, p. I ■'.7.7. !'.:<; I'lii. |). 7".i'.' «' riiMMi'iiANs, .\. S., Scliiii, .\l.. !■'>, f. 4 .'). " ( , i!i KNin.Kini, I Mini.: Scliin. ,\t., 15, I', I. -. n'>t '1, r. i;;. ('!iiii|i. r.iiv. •' iTNi iri,.viix, t Jniii.; Sfliiii. .\t.. IV, (. 4. I'miii iiiii i|iiilf circnliir. •I ixii:iiMi.iiii'«, •Jrmi.; ( iiiU'cir Mrxicn. Scliin. .\t., 14. I'. ;!l AM'». < ii-fv.; ('Mni|i. I'.Mv. Scliiii. .\l., H'l. f. It. '< iii.MAiKiiNAirx, A. S.. .Slim Al.. H>. T. 7. Cinii.. r.;iv. «• ( i!Kiu;i;.-nii Ml'-, tlifv.; Si4iiii. .\t., 14, 1'. 'is ; "):i. 1. 1>. l{.\i,i-ii. \V. S., .S. |{. I), 30. f. -J.'.?; Si'liin. At.. H, f, 1 I. (Iitir of Mfxicii. <'iiiii|.. Hay. " HOTI'I.A. ti 11111. ; Sihiii. .\l., 1 I. I'. I". <'itii»l>. Hay. " S,\i KiMfiMMi, liriiiiii.: Si'litii. Ai., "i"-'. i.'ti ina(tiiit1fi! "KKt (lliiiiielcri. Kit. 1. Hai'iiiii(ii>[S(1!s Makyi,andk'A, TC— .l/iV);ii('. — ^/wovoopB, May, 1889. Kits, :>, 4. " I-'kukjkhii, T. <'. — Mivrimr.njw, Mhv, 1.ss!>. These three desi'iihed species niiist he rc. 8, 9. S'l Kj'ii ANoi'V.xis sui'KiMiA, Sclini. At., 12;'", I'. 4, •'). I -artje and small torms. Fig. 10. .\ANriinii'.si.s u.MBit.NATUs, ( irev., T. M. S., 18t)0, p. 2, 1, f. •"). ■. I)('|Mis. St. Monica. " Rai.ksm var. Monica, (inin. Cal. V. 11., 124, f. 3. Pmictac lit" liordcr arc (itiincunx. " AiJKNUs, var. Caliruniica. (inm.; St. Monica. V. H., 12."), f. 10. Aci'l.Vdl'l'VfUUS viFi.iiAiiis. var. \iisiinica, (Inin.; Hiclimond, Va. V. II. 121, r. 7. (W-ABHA'rrs, var. Anaeloiiiiii, (inin.; St. Monica, (al. V. H., 121), f. 9. " i.i.AHRATO, var. .Monlercyi. (inin.; Depos, Mon- tcicv. V. H., 120, r. 7. " si'iNiiKKdis, (vulgaris var.) (ham: St. Monica. V. H., 121, r.T,, (i. " «r,AHi{A'n;s, var. incina, (trim.; Si. Monica. V. H. 120, I". 8. " VULGARIS, var. Monicac, limn.; Cal. V. H. 121, f. 9. i'l .•■•liXXW I I 'I PLATK LXXXVI. Kiuurev iiiiiuiiilit-il .Vki illiiuii'l('i'!«. FiK. 1. 2 8 If 4 l( A " «. " 7. " 8. " 9, C<)sis(i!s cosciNuiHscis, (iiiMi. ; Sclmi. At., (id, f. 4. Mon- te rt' v. " (K riJs-lKlMls, Khrl).; Sclmi. At., (>li, f. 8-7. C'KAsi'KiM)ins( r.-; KHoMBi' II-. ( iiUK. : s.lirii. At.. tt6, t'. 18. Mou- lirey. '"More likely a viilve of Hiils<'iN<)i)isciis H^;•l'^;uol'ol^•^, viir. (Inm ; .VlDnit'iey. Soiini. At.. «1, r. •■), i. Crasi'mmhiiscus Ei.h/iAN.s Kliili.; .Schiii. \\., (id, r. I. Nottingham, M.I. " CdficuNomstijs, Khrli.; Schm. At., tki, f. 8. Not- lini;iiiirn. .VI■ " i>iuKAMA. Scliiii. .\i., ti4, t'. J. = ('. j;ii{iis, Klirl). 4. '• AsTKHOMi'iiAi.f.s Klirli.; witii lartrc ci'lls. Si.Mdii- ifu. Scliiii. At., (>'A, (. !•_'. *' Koiiu.-^Tis, (itvv.; St, \[niiicii. Sclmi, At.. (>•_', f. ti. " (KNTHAl.i.s. Khrlp.; Cal. S.'lmi. At , (>:!, I'. 1 ; (10, 1', ll'. " SI si-Kcrrs, .Jimisfli. Cai. .Si'lim. At., •')'.», i. l2. 'IMii- inesiu's only slightly smaller at inar^;iii than in center. " < >Mi>HAi,ANTiirs, Khrli. Margin arelieil. Monterey. .Si'hm. At. (i;!, r. 2. '.'. " I'KKKoHATU.-i, Kliri).; Kieiiinond," Va. Series of pnncta radiating; Sehm. .*Vt., (i4, f. 12. 10. " i.iNKATis, Khrli, Sehin. At., .")9, f. -26. 11. ' " K<)HtsTf.s,(Mev.; St. Monica. Smaller form nflig. ."i. Sehm. At , &2, f. .'>. " .5. " H. '• 7. " 8. ti ! \ J- I'l.^i,. I,\XX\'il i a i if • .'^ CO ^l,-", o " ; Li I'LATK LNNWIII. f'ik.'111'rs iiiiiiiiiilli'il ")'Ki iliMini'lHr- r FlL'. 1. X 5. 6. 7. 8. 10. 11. Aii,A((>iiiS( L's ('iirx, Klirli.; IticlinKiiid. \'i\. Areolation (felliilcs) hixaijonai Srliiii. .\t., 1-1, ♦'. 1. •' KirroNii, .Anmli. St. Krniiciscd. Sclim. At.. ;<•', r. ;! r= .\. KlirenlxTiiii, J!mi:^(!li. MunH-rvv. ••' Till Mil, A. .•<. Tlif cclliili's ;irc nut siiiijily round ami smciotli; tiii' diMloin is cuiniiosed (tf two plates, the iipiifr oii«" is ptTloratt'd and the oilier dnttnl ail over willi j;raiiiiles. .S|. Mon- ira. Scliiii. \l., lOS, C S. " i)UhXji)M:s, I'ailcv. .Vrfohition more or lesK liex- auonai. (AMI-llKNlA, Sclilil. .\,l., lU, 1". 1. 5. ()RK(i(iNl's, siiiailt'i- var. of tiu;. 4. .\I1 -, A. S., .Sciim. At., :$•"•, I". ."). Calirornia. I'lfuuAHii.i.-, .\. .'^.. Sctiiii. At., :'.t), t'. lo. .MoiUfrey. (Vllnlcs airaiiK't'd niori' or iesN in ciiclps around the middle. Nearly al, f. :5; Sclmi. \\.,:M\ f. H ; V. II., 107, I'. \,± M,u;itAKANi's,«rev.; T. M. S., 1H«:5, p. .'.l, :i, f. IM ; S.lu,.. .\t., :!1, f. 5. KAi.iAiiis, Hsiil.; T. M. S., I:W., p. 49, S. f. 14. " I'l'.RiviANl's, (irev.; T. M. S., lS(i2, p. 25, 2, f. «; Sciiin. A(., :V.', f. 2".t. ('ill. '' SciiMiDTii, ( Jnm.; Caiiip. Hsiv. Sclim. .\t., ISO, f. 7. .AKLATis, Bail.. N. Sp , p. fi, f :i 4; Schni. At., 32. f. 14, 1."). Mont. " HAcKMosrs, RkK.; Scl.ni. At., :«), f. 12, l:!. " coNKi.iMiNS, (iniu.; Sflim. .\t.. Ml, I'. H). " ('AKliAii's, V'"". Bnilev ; Camp. Hay Sclim. At., ;>2, f. 17. " •' var. lalccostata, Sclim. At., 32, f. 18. Ki^. t I'l..t, l.XXXIX. M'lllll. ■'oliin. . I'. 14, , r. 17. i^. t(K> . At., luie as ti ( I " 2. KiKs. 7. S. FiK. H. " 10. " 11. " lis. y\\ti\ri- iiiiiuiillli'il '"' illiiiui'liTH. ('.wciNiiDisciiH KXiAVAi'is, (licv.; I'rit,. (•. S-.'^t, H, f. '2i\ \ Sflnii. At., «.'), I'. I . N.irtli ( 'nnilinii, New .leiMey, etc. '.' sh:('KIoi»WAiti)i\. KiiUri'^. D.Mil.lfiill.v this spwiex ,mii (loiilitfiilly N. Am.'i'., S<'l.i.i. Ai., (il.f. J; 115, r. '1. « Ki,oiui.t;i,is, A. S., Sclim. At., 11:!. I'. Id. St. M<.- nicii. Kiiys n a ^traiKlit, Init iimn' or Icsw oiirvi'tl, in cniiienlrii' iiml ecfenlrif ^crit'.-i of celliilfs. Ilnnily f<»'p:iiiiliic from (;. KiuliiiliiH. «' i-Kl-rnri'M, llnm. ( '. liiifatiis, v;tr., \'. II., KM, I'. 5. ('alili>nii:i. " vr.i.ATi;.-., Sihiii. At., n-2, I' lti-1-Jiiliices tliene douht- fully to C. volatile ViiKinia. Miiv be varieties of ('. Marniiiatiis. " iMiMiKs^t'H, . California. Sclim. .\t., 58, f. 4(». i'itriire rather liiieiy lined. .Mijflit be more in liexuKonal cells. « i 111' KiiiliiitiiH. ,, i:ii, f. T).' lu'se iii)iiiit- )e viirieties IT of cell I. .\t., .')8, f. (lit be niort^ l)v A. S; Si4iiii. .Vt., HI ' h PLATE XCI. cMkitps matfiniMed r*X) dliimeters. Fie;. 1. Arachnoidisoi's Ehkknukugii, Bail., Wilkes Ex., p. 174, 9, f. .9; H. H. D., 31, f. 'iiiS; Schin. .\t., 68, f. 1; 73, f. 1. ' 2. " EHRExnKKfiii, viir. Montereyana, (Jrnn.; Sclim. Ai., (W, f. 2. " 3. " EiiRKNnKRdii, var Californiea, A. S., Sclini. At., 73, f. 1. " 4. " EHKKNBERfiii, var. Californica, WeissH ; Schm. At. fi-. 3. . " '). " (iREViLLEANi'a, Hardiii. ; Scliin. At, CS, f. "). Monterey. " 0. " Indici-s, Ehrb., var. ; Schni. At., 73, f. 2; Mik , 3(i, f. •_>4. Figs. 7,( 10, 1 n. " I.NDicus, vars. ; Sclim. At., (58, f. 6, 9, 10. Cen- ter ie.sH filled ; hardly a rosette as shown in tl<;s. 10 and 11. 8,9. ' OKNATU.", var. Montereyana ; A. S., Solim. At., 73, t'., 7, 9. Kosette does not show hiank center large enough in either figure; it IS (juite apparent on the valve, H.li. S. MSS. ' iff \( Pr.ATK X( II. I'isfiires inugiiUlfd .VKl iliHiin'tf'rs. i I i W m KIk. 1- A< TiMU'TYc HI - HEi,i. Miirvliind. Kilxe-wUe the disc is undulating. '■ •_'. " Pi-iT/.K-Ri, Grlind.; Schm. At, 29. f. 1. Cal. (im. KNiil.FKl, .\ S.; St. Monica and Monterey. Schni. At., 1, I'. 22: liUi, f. 4. rNDULATl'M', Khrl).; Monterey. Si-hin. At . I, f. li ; V. H. 122, f. :!. K.vt'Ki.i.KNP, S. 64; Sclun. .At., 1,1". 14. sHJ.KNI>K.ss. Sehiid.; V. H., 119, f. 1, 2, 4. " var. erucil'era; Cal. St. Mi>ni, (.;. t( FiK. s. (( • i 9. II •• 10. II 11. 12. IJ. i'h.tr W i! H I'LATK XCITT. KiKnri-s iiuiguillcd .'iiM* dlinnoUTs. Fig. 1. Figs. 4, 5, H. ASTKROI. 1' Fig. 2. " 3. tl u " 7. !• Figs. 8, 9. *. AsTKROi.AMPRA Marylandica, Elirb. Fig. 10. 11. varieties, M. J., 1860, p. 94. % f. 3; T. M. H., 1860, p. 47. 2, f. 13, 14; p. 108, 3, f. 1-4; 1862, p. 44, 7, f. 1-3.^ VARIABILIS, Grev,; T. M. S., 1860, p. Ill, 3, f. 6, 8. Brookii, Bail.; Sill. J., July, 1856, p. 2, 1, f. 1 ; Prit., 837, 5, f. 79 ; Schm. At., 38, f. 9, 21, 23. Brebissoniana, Grev.; T. M. S.. 1860, p. 114, 3, f. 9. Monterey. Dabwinii, Grev."; T. M.S., 1860, p. 116, 4, f. 12, 13. Monterey. ROTULA, (^rev.; T. M. S., 1860, p. 120, 3, f. n. Monterey. ELEGANK, Grev.; M. J., 1859, p. 161, 1, f. 6; T. M. S., 1860, p. 118,4, f. 16. xciii. 108, 8, f. t), 8. I, f. 1 ; 21, 23. 14, 8, f. . f. 12, 3, f. o. ; T. M. ^^i If !■• ; ' I « ' I u 1^^ ' I fi ! ■ I 1 . il' iAf Figs. 8, 9. Fig. 10. " 11. " 12. " 13. " 14. 15. " Ifi. " 17. " 18. PLATE XCrV. Klcnrps M)Hi:iiii1lati()n, lii'.xagoniil. " 3. " (lONCAVT's, Ehrl)., Mik., 21, f. 4; IS, f ;W ; Sciini. At. 5!t, f. Hi. Monterey. Figs. 4, 5. •' CorcoNKiKOKMis, .\. S. Monterev. Siliiii. .\t.. 58, f. 25, 2t). Fig. 6. " HADioLATiJs, Kliil.. Miix., 31», ;;, f. 18; 22, f. 4; 18, f. 36; K. B., 2it, f.9i ; Sclmi. M., 60, (. 11. Cel- lilies rather ♦.()() irregular ami too ra(liate,H. L. S. '■ 7. " NODUIJFKR, .li.n., or lietter I'. liADioLUS »ar. luulii- liter. S.iim. .\l., 59, f. 20. (.'amp. Hay, (^al. SUBTILI^ Elirl). Kicliriioiul, \iryinia. 57, f. H, and 15, 16 vars. Tlu' latu-r with areolalion Komewliat larj^er. NiTiuil-U!?, (irun. Camp. Bay'. Sehni. At., 58, f. 20. KADiOLUs, (nun. Mo!iterey. V H., 132, f. 7. CENTKAMf, Cirun. ; not threiiherg'.s figure, whicii is very indetinite. Hchni. At., 60, f. 12. *' AficuLATiis, (= perforatns) Ehrh. ; Sehni. .\t., 64, f. 5, 6. Kiihmond, Va. .\CTIN0CYCLUS cURVATtiJ.iJK, Janisch ; Sehni. At., 57, t'. 31. CowjiNODiscr.s, NiTtui'i.i'f, (iriiii. (amp. Bay. Sclim. .\t , 58, f. 21. " MARCilNATO-l.lNKATUSi, A. S., Schni. .\t., 59, f. 33. Camp. Kank. ROTiiLA, Uninow; Sehm. .-Vl., 57, f. 6, 7; Camp. Bay. Lewisianlh, (Jrev.; Hchm. .\t., 66, I'. 12; T. M. iS., 1866, p. 78, !S, f. 8-10. Rappahannock, Va. According to Grevill'j tiie uranules have a dis- tinct radiate character. HTKLLlgKR, Griin. Camp. Bay. .Schm. .\t., 58, f. 10. MINOR, Ehrh. Ahh., 1839, p. 147, 3, f. 2; K. B , 1, f. 12 13; Schm. .-it., 58, 1. .39,40 .MAiiGiNiiLATi's, var. ciifvato-Htriata ; V. H. 94, (. 32. NiTiuuLUH, Greg. Canjp. Bay. Schm. At., 58, f. 17. var., Schm. At., 58, f. 19 NoTTINaH.^.MKNSI,s, Griin. Maryland, V. H., 129, f. 2. MARGlNtiLATi'.s, var. Campeachiana, (irun.; V H., 94, f. 33. 27. '* .MABOINULATU8, Gfuu.; var. Stellulifera, Grun. Camp. Bay. V. H., 94, f. 34. « (4 II 1 I III I I It'll,. \( 'A ; ■ I r S I > . ■* PLATK XCV. Kitiiifs miiunltlril ."i Fie. 14. HinnOLPHiA TlHMKYii, l.iiil. ( ainp. Uny. Schm .M.. 1 19, f. I- 8 : T. M. S., IS.V.), ]>. s. 1, I 1,'_>: V. H., »H, f. -J, 3. Th»' itraiinlfs i>f' central |mrt of tin. 4. arrafged irt, 1«. Not- tintiliaiii, Marylanri. Fig. 7(101. " KMoMUVs, [K\\rh.). W. Simth. {Xy(/ncfri>n Klirb., Dev- licefla F.hrb., Odnntdla, Kuetz). Fitfs. S, 11 -l.S. " Koi'KRiANA, (irev.. V. H., 99, f 4-6; M. J.. IH59, p. 163, 7, f. 11-18. The >;raniile(* are quincunx, on all the hnops. Kig. 9. " MoRiUBNsis, ^ Bailey ), Grun. Zyyoceron, Raiky, Bid- dviphia, Bailey I . W.Smith. Sill. J., 1845, p. 336. 4, f. 2, 4; V. H., 101, f. 4-6. '! ■■ 5 i !■ Itt ill m i I'l.it. XC\'. I! II i I, i{ t Figs. 1, 2. BiDDULPHiA pin,ciiKLi-A, Qniy.; A front and a lateral view. ( Denticella Riddxdphia, Ehrb.; liiddiUphla Locu- laris, Kiitz.) t'amp. Bank, V. H., 97, f. 1 ; Schm. At., 118, f. 2(5-29. '• PULCHKLLA, (»ray.; a lateral view. " KmvAHDsii, (front Jiml lateral view); V H., 100, f. 9. 10. Only a prickly form of B. Roperiana, Orev.; M. J., 1859, p."l6:j, 7, f. 11-13. LONoicRi CIS, Grev.; M. J., 1859, p. 163, 7, f. 10. " SETiounosA, Grun.; Virstinia. V. H., 101, f. 7, 8. 1. " AURiTA, Lyngl..; V. H., 98, f. 4-9; 8. B D., 45, f. 319. " LONOispiNA, Griin.; St. Monica. V. H., 102, f. 6. KETtciTLATA, V. H., 102, f. 1, 2; Roper, T. M. 8., 1859, p. 14, 2, f. 13, 17 ; Schm. At., 78, f. 21-23 ; 84, f. 9-lG ; 85, f. 8. Fig. Fins. Fig. Figs. Fig. FigH, 3. 4,5. 0. 7. S. 9, 10, 1 12. 13, 14. 'l\: I'li.i.'Xc'v; p(7^^,,ii>s^ ■m ^J3;V/ <<>^7^f^ ^1 ' (•i l I' I 'Ml ; ' * KiKs. I , "J. 1 5, 5,4. Fiy. •:» (111. ti. 7. S (10) II. (■'luiiri'^ itiiivdililril Vm illiiiiii'li'r> \\.) Hiui.ri.i'MiA i.vKvi>, Klirl.. Mik.. :?:{, 1.^, I. Ui; T. M. .s., IHr,9, |.. IK. 'J. f. --M -•-•';, Sill. ,1.. 1842, -1, f..H. A lew i,f til Hiiy \;iiiflii's witlejy liiNtril'iitetl friMiiii'iii iihiii; the .*e« Ixmril. Imt iilsu inlHiid. sail iiinrshis i.r Kancas, I'tMli, ftc " irR(Hi>r>', W. S.; ('enitauhi'*; (Idonldlu, Ehb Spines of llie valves* wavy, ii'-l liiiid. \'. II.. 104, 1. I, -2; S. r.. !»., (i'2, f. ^^M\ T. M. S,. iH5i<, |.. 17. -J, I". 2:!, " woi.YMt)Kl'Hi> iCeralaiihiH), \'. H., 104. f- 4, "5 Odoniella. i>ulyiii(>rphns, Khrb. I'.idiliilpliia laevis, W. S. •' .JUIINHDNIAM s, Viir. (il'CV.; Sclllll. .\t., II'), I'. 16. " irKoiiHN Klirli., S.'Imi. At., I Id, f. -J. r/V/e »)«. W, 4, aliKve. " oVAMS, CriilaiiJiis, \. S., S(4iiii. .\t.. 115, IV 7, and Wn, f. .0. Tliis (liiiiiiin is nui only finely ilotled but am.lateil like a ( osciiiodisius. '* ('AMF(iKXtc!iT» {Ceralaiilw), \. S. " Vide fig. '). PLATE XCVIII. ''ijfiircs iiiiitt'iiilii'd ."dKi (liimictci'!-. Kiiis. 1, •_>, :'.. I: '£ < Kitf. 4. Kiss. .-., tl. FiKs. 7, 8, 9. FiK. !(►. FiKH. 11,12. i( i;^, 14. (( 15, !(!, •' 18, 19. HiDDrijMiiA Hah, KYI, VV. S.; S. H. I)., 4.'), f. IVJli; (W, f. .".-i-i: T. iM. .S., lS.-)9, p. 12, 1, f. 09; V. U,, 101, f. 4, ."). Xoarly akin to B. iiiobiliensis. *' VVooi^MANii, Kain iind Sdiiiltze; Ilnll. Toirey Hot. ("liil), March. '89. Atlantic Ciiy, Artesian well. " DEciPiKXs, (irnn.; V, H., 100, f. 3, 4. Atlantic Citv. " Ki,K(tANTi:i,A, var. of Tuomeyii, (irev.; 8chm. At., 119, I'. 9, 10, 11. " CooKiANA, Kain lind .Schiiltze. .Vitesian well, At- ■ iaiitic.ily; Bull. Torrey Bot. Cliil), March 1889. Var. of B. Ornata, i ast., 1887, p. 10.% 2.'{, f. 9. TKNUis, Bail., H. J. X. H., vol. vii, I p. f. 25. i'rol)- alily identical with H. Bailey i. Vide fip.s., 1-3. Tiu.vAritiA, Bail.; B. J. N. H., p. 3:?8, 1, f. ;{4. 3-5. A variety of Bid. Baileyi. PoKi'KiA .iUADRATA, (Irev. T. M. S., 18(1;?, p. 6.5, (), f. 20; V. H., 92, l)is f. 15. " BRi'rTOMA>.A, Kain and Scluiltze, Bull. Torrey Bot. Cluh., Aii^. 1889, p. 20S, 92, f. 1, a. 1.. c. Arte- sian well, .Atlantic City. V .1 '!,-ii.' XCA'iil. PLATE XCIX. Klanrpn inii«nlfie(1 5110 dItiiTiPtei's. .» ii; :i .: i Figs. 1. 2. Trk.kkatiiim favus, Khrl.. Mik., 13, f. 17; K. R., 18, f. 11 ; S. R. D., r,. f 44; 30, f. 44: V. H , 107, f. 1-4; Schin. At., 82, f. \:\, 14. 3, 4. " KiMBRiATCM, Wall., M. .1., ISoS, p 247, 12, f. 4-9; Lens, i, p. ion; II, p. 105; Sclim. At., 82, f. «, 7. ^'loriHu. " 5,6. " FTMBRiATiiM, Gmn. ; V. H., 109, f. 1, .".; Scliiii. Al.. 99, f. 10-K5; toniiii major, and forma piisilla. St. * Monica. Fig. 7. " CALiFOKNKn;M, Gnin. St. Monica. V. II., lOS, f. 11. FigH. 8, 9. " iN-Ki.WiANS, Urov. St. Monica. Fig. 8, var. mioro- pora, (rrun. ; fig. 9, var. Yiicatensis, (Jrnn.; V. H., 90, f. :{, 4. (OdxmtdUi). Fig. 10. •■ (ONjsimii.k, (Irnn., (Orfon/e//a). St. Monica. V. H., 108, f. 2. " ]i. " iiiREOUi.ARE, var. (Jrnn. IVtersltnrg, Va. V. H, lll.f. 10. ' 12. " iNKi.KXiANS, Biddiiljiliia, var. araeopora. St. Monica. V. H.. 110, r. 2. U; f :i!. f I'la'.. X( IX. li > ..#-^ If, ■ ? i [ I <■ i^ Fig. 1. .( 2. f4 Figs Fig 3. ■». (7). 5. u fi. « 8. Fig." 9,10. (( 11, 12. ft 13, 14. Fig. i6. Figs 16, 18 Fig. 17. IM.ATE I". riKiircK iiiaikciilticd. .5(MI dlunietf^rH. Thickratium tabellakium, Brightw. var. deploHtiotn, (xrHn.; Camj., Bay. Sdin;. .\t., 77, f. 1. " VENTLOSUM, Cirev.; (xiilf c.f Mexico. vSchm. At., 77; f, 8. '■ BIILLOSUM, Witt.; ('ain|). Bay; Sclim. .\t., 78, f. 33. " VENTTi.osiJM, (Jrev.; ("amp. Hay. Schm. At., 77, f. 9, 7. " TKii'AKTiTUM, (iriiii.; Caiiip. Bay. V. H., 110, f. 8. (BiHdiilphia). " HKTER<,»(>KiTM, (inin.; St. Monica. ( Biddulpliia), V. H. 112, f. 2. " INTERPITNCTATUM, (iiun.; Xottingluini, Md Schm. At., 7t>, f. 7. .V very variable species often apparently clnsely related to T. elegans, Grev. " TBisci'U'M, Bailey, Camp. Bay. Schm. At., 78, f. 0-8; 112, f. 11-18. " PARAI.LKLUM, Grev.; Monterey. Schm. At., 75, f. 11, 12. " Harrihonianlm, Nor. and Grev.; Camp. Bay. .■^chm. At., 7-% f. 14-16; T. M. S., 1861, p. 76, 9, f. 9. " I'ARALiiELU.M, lornia trigona, Grev.; Schm. At., 76, f. 14. alternans, Ehrb.; Schm. At., 78, f. 10, 12 (9-20). (Jamp. Bay, etc. " .swERt'ENDUM, .\. S., Schm. .\t., 76, 1". 8. Notting- ham, Md. il ( 'l.'.l, ( A" ■ rt . vfi fVH^' 'v- '-i .•• / . h i i 1, PliATK (1. Fiiiiircs ni:iv;iil(l('(l 'itKi dliimfHTs. i' Fis. Figs 4, ft. it Fig. .;, 7. 8. t( 9 (1'2) t( 10. a II. >. 18. 14. lo. U). Triceratium ANTiM..\Rr.M, Clevf., 1H78, Sihm. .\t., '.»« f. 14. " KrrroNiANUM, Grev. Maryhind. T. M. S., 18B5, j.,8,2, f. 18. " !*oMNO(EROs, Khrb., Sill. J., April lH4o, p. :V29. 4, f. 28; M. J., 1853, p. 248, 4, f. 1.; S<-lun. .M.itfi, f. II ; 77, f. 21. " siBi oRNintiM, (^run., Camp. Bav, Scliin. .\t., It9, f. 15,18. is. -2, (•^). ii I'iu. '.i. • t " 4. (( • «. (f 7. s. 9. li. 12, Tkukkath'm Mostkkkyi, Hrixlit; ^'iiiita MonicK ; Scliiii. At., 94, C. 1, ■_', 3. si'ixosi'M, IJitil.; ( iimi). Hank. Schiii. .Vt., ST, I'. 2, X. .siiimonNit.VTli.M, A. S,; \(>tlii»Kliaiii, Md., Hchm. At., 9.\ f. 1. •lUCATioNSK, ( iniii.; ('aiiip. Hay. Scliiii. .\t., 7(», I', lo. « (»Ni>i('tiuuM, Hrif(lit.; Ndttingliam, M<1. Sdiiii. At. 7rt, r. 27. MUHKATUM, Hri);lil.; <'a»H). Bank, Siliui. At., SH, f. s, !i. KiscHKiii, A.S; Patuxel Kiver. Sdim. .\t., 7(), ('. 34. TKHXEt-ATUM. ( Jrev, var.; Nottingham, Mtl. S<'hni. At., 7(>, 1'. ;!3. oHsciiKi'.M, forma minor, (Jrtiv,: Pisoataway, Mp. .Si'hm. At., 7H, f. o. VAi-iDU.M, (iruy.; Santa Monica. Si-lim. At., 94, f. 5. I'NcnNATUM, Grnn.; Pacitic Coast. Schm. .\t. 94, 1'. 4. DUKii'M, BriKl't. (.'amp. Ray. .\n al>nurmai Turin ; Sfhm. At., 78, f. 26. /, '!:/l I'l,,t-Cli Q i»liATK ("tit. Klifurcs inatrnltlod "iIki illjiiiK'tiT'*. KIr. 1. A(TiNl, f. 4. SiintH Monica. " 4. A( TiNOiY.Jurs NiAOAKAK, H. L. a., A. Q. J. M., ls78, p. 17, 3. f. 10 : .1. M., 1«79, 135, 6, f. 10. " .■). " MONiLiFoiiMis, RallK.; V. H., 124, f. 9. \. a? Allie, 82, f. 13, 14. " ANTEDiLUViANUM ( Anipliltetms), V. H., 109, f. 4,5. . « UNDULATUM. (Ehrb.) Brinht., M. J., IS.W, p. 248; V. H., 116, f. 7. Dilylium, Nottingham de- posit. Mil. « iNEi.EGANH, Orev.; T. M. 8., 1866, p. S, 2, f. 21 ; Sdim. At., 81, f. 16. Santa Monica, Cal. " reticumtm, Ehrb. Milt., 33, 16, f. 13; 18, f. 50; M. J., 1853, p. V51, 4, f. 17. " 0UTU8UM, Ehrb. Mik.. 18, f. 48, 49 ; T. M. 8., 1866, p. 8. FosHil, Richmond, Virginia. ♦« K AINU, Pchultze ; Bull. Tor. Bot Club, PI. 89, f. 6, March 1889. Artesian well, Atlantic City. " UNDULATUM, Ehrb., (Virg.), M. J., 1853, p. 250, 4, f. 13; V. H., 116, f. 13, var. Deposit, Petersburg, Virginia. " biquadratum, Janish, Schm. At., 98, f. 4 and f. 5. Letoii Bank. " 8TRIOLATUM, Ehrb. Attached to smaller forms of algae. Front views (11, 14) show a fine but distinct hexagonal areolation. M. J., 1853, p. 250, 4, f. 10; T. M. S., 1854, 6, f. 3 ; S. B. D., 5, f. 4, 6. " Ehrenberoii, Grnn.; (Discoplea undulnta), Ehrb. Fossil deposit, Nottingham, Maryland ; V. H., 115, f. 7, 8. " UTHODKSMiUM (Minusculum), Grun. Deposit, San Diego, California; V. H., 116, f. 2-4. t I'l.ll. (•I\' iVLATK CV. Klmircs iiiiisiiirlp. Fossil, Peterslmrff, Va. -• " ''KMnnKctii.ARK. (Kii.Mlia Hiitjiitwellii), M..)., iHoS, ,.. -'-Vi, 1, f 21. sKMiciKi TLAKK, Aitesijiii Well Atliiiitic City. Hull. Tor. Kot. Cliil), Mari'ii 1SS9. AHcrKTM, v:ii. Ciilifornica, (l r-m\ (lijuncifrs. Fiff- '• TrufKKAiii'M <('iTiiT,iM, Briiflit, M. J., 1S53, p. 2")0, 4, f. 9: Sdim. At., h:^, r. 11-1(1. (iiilf of Mexico. " •_». " Ai/iKRNANS, Elirl). Camp. Bay. S. H. I)., .">, f 4.") ; V. H., 1 IS, f. (i: SJchm. .\t., 78, f. 9-20. " 3-'i. " -^i i.-LPiTM, ShiMll.., T. M. S., is:.4, p. 15, ■_', f. 4: Schm. .\l., 7ti, f. i)-12; V. II., 109, f. 7, S. . » Ciiiiip. liay. ( Iriimiies li;inlly iirdiiiiiu'iit eiKiiiuii. " »;. " cDNsiMir.K, (Irnn.; V. H., U'S, f. 2: Sclnii. At., 84, f. 18, 14. Siiiita Monica. "7. . " AiKTiciiM, forma Campea(4iiim!i. Camp. Hay. V. 11 , 112, f. 1. Cellules iiex.iiiKiilar, not so lect- aniiiilar. " 8. " m ADiiANCiULAKE, CIrev. HaiUa Moitica, ('ill. I'roli- alily only a iniadraiignlar form of '!'. arciiciim. llie celliilae are ri'ally radiate. Fi>iitly magnilied. Fiy. 10. " (iHi.iiii M, (irun.; V. H., i 10, f. 1 1. iiiairiiilic'il .VHi diiuiii'lpfs. I'iKs. I, -J. " :!, 1. •■ t>(V)). s. 9. n. A M niii'i; u: V Ni:iiKi>, I-cwis. Ailmitii •ni;lii <>(' vulvf .11(12". ('I .('D-l"..". \. Mii.l i;. S|.„ (). I, (• (1. •' cnxsKiMA. I.cwi-^ N. mill H., 1, f. 'i. F'ruf. .Smiili writes: '• 1 liclifvc I ;itii tlir uiily iiiii' wlio I)m> >|i<'('iiiii-iis III tlli^ (liiitom ; it is --r.'iiccly si- lin-.iiis. " Cd.sT.VTA, ( )'Mr:irv. Iri^li; I'lTdliL'tillsly cui'iilli'il ;is N. Aiii.Tiriiii. M..J., \'ul. l.\., N.. S.. !•_>. f. (I. 'rvv;;;\;"M Monikrioyi. IJriulit-v. Coiiied t'mm I'ossil diii- toiiw of New /omIuihI, (PI. \I, f. "Jo,) to show the t .xtii'ine lunvi'xity of llic tt'riiiiii;il vmIvimiI' a t'riistiilc. SiiiiKKi.i.A rci.riiKA, Lewis N. and 11., p. 4, 1, I 1. .Mlied to S. /(iKfuond ind S. I'ximiu. St. Mary's Kiver. (ki (lliiiiielers. r-"iu. 1. Tr'cKHATiiM iMi.KuLUH, Eliili. Mik., ;<")H, 21, r. 17. '• :;. " piLKUs, P:hrl). Mik., 19, f. 18. ' M. " OBTUsuM, Hriuhl. .VI. J., IX.W, J). -J.")!, 1, I'. 20. Virtrmia. " 4. A.Ml'iiiTKiKAs uitNAiA, (iriv.; := Trie. |it'ii'.ii<'rimiiii, Wailai'h, M. .i , 1H.^S, :2, r. 10-12; T. M. S.. 1S61, p. 45; Sclini. M., ;ii. " 10. " .ji-iXAUius, Khrl.., 15. K., 1, f. 20; Mik., :;:;, f. 1(5. i'ijrs. 11, 12. C'osciNonisrus 1'rNCTATr.s, Ehrl). Mik., 18, f. 40, m : Sm. Sp. T., No. 97 li'.r. ni-l-"). ."^UKiKKi.KA fA.Mi'Yi.oniscus, K. F]., 28, f. 2t) : Kal(.. .'J, f. 4. Tin- samf as Campylodisciis spiralis, which is also l>"tter proportiont-(i. .*>ee Plate. *• Hi. THicEKATir.M RKTK'Ci-lTM, Siiim. .\t., 7tl, f 2»i. Compare PI. h»4. f. o, 6. ii,(A'lll, I'. 20. I 1 ! t!ii Fn.ATK (MX. Kiu'". 1^"). I>i'ii.Ml.\ NKKVKRso, S. H. D., PI. 47. FIrs. 1 ;m(l -1 iiiii>,'ni(ied SOd (liHineters. Fi^s. 3-ii various pcwitions ma)j;nifieH 2o0 diHUielers, attached to steiii of Folysiphonia. " H-9. ls'ni>MiA KNERVis, S. B. I)., PI. 4H. Figures K-9 inagnitied .5(1(1 (liaineters. Fifjures 6-7 magnified 'i-'iO diameters. ^ ^.^^ag^^^muh I'Imi,. CIX-. ied 50(1 fjni fieri kia. iied 5(1(1 ters, ifi 1 ! I I .1' - ' if I u ; if I ' ' i i..l-\ I'LATi'] ex. KiL'uri'x iiiiiuiiilli'il .'iiiii (liiiini tri>. Fig. 1. CorJciMiDisco iMiiKii'.-. A.S., Scliiii. Ai., i;i'.l, r. I. Simla Monicii. •_'. ThICKHATII M CaM1'KA( IIIAMM. Ki^s. 3, 4. Cami'YI.ouiscis BK'osTATA, \V. S.; r. M. S.. l,s.')4, ]>. 7"), li, f, 1 ; V. H., 75, f. 2 ; Schni. At., ."i% f. I, o. Kig. .'). ('YcLiiiEi.i.A ( ((MPTA, viir. Boddiiicii, Kii.: V. H, 92, t'. Iti-'i'J: V. H. 98, f. 21, etc. Br. Col liiit. Kigi*. 6, 7. liiDDLLPHiA ANGii.ATA, A. S.: N<)ttin>rliani, .M(l. .Schm. At., 141, 7, 8 \'alveH iirf marked Hoinew'iat like Conrivo- (Hacuh. Kig. H. HYALODii^cufi RETif;uLATt>, A. S., Sclun. At., 140, f. 7 M(tnterey. Figs. 9, 1(1. BinnuLPHiA mkmbranacka, L'leve ; W. Ind. diatom; o, f.83. Near ZygoeeroK Balaena of' F^hrl), > IMAGE EVALUATION TEST TARGET (MT-3) 1.0 1.25 lii|2£ |2.5 *^ Kii 12.2 u u4 1.1 l.-^ll^ ^. !IU4 ■7] VQ '/ Photographic Sciences Corporatioii 23 WIST MAIN STREiT WiBSTER.N.Y. 14580 (716)872-4S03 PLATE CXt. F'iKnres inaKnitlrrI rM\ (iiiiiiiotcrs. A Figs.' 1,2. Xavki'la maoulata, I'^wanls, Stiiiironeis niuonliita, BBiley. M. .1., ISfiO, p. 129; Schm. At., <>2, f. 10; Hm. Sp. T.. No. 29li. Nf.ir latiHHiinti, vide Sfhnlt/.e's ti(f., , Bill. Torrey Hot. Clnh 1887, April. Fig. H. " PRKTEXFA, var. (Eliri).), (irimdl. Camp. Rav. " 4. TRiCKRATfCM sm.PTL'.M, vai'. (inindl. Atlantic ('ity, Nottinp- Itam, etc., Sclini. At., 7'i, f. 12. " 5. All. istuTs !'Ki'iN-o,«n's, Bail, (tiilf Mexico. T. M. S., IMtW, ji. 49. I'i. .S, f. !:'.; Schm. At.. 31, f. 6, 7 ; 108, (. 10. '' ti. " si'iNosT's, T. Christian, closely allied to (Hyphodiifcus. Atlantic City, I'.iill. Torrey Bot. Clnl>, Maroh, 1889, p. 73. " 7. Xavh'I l.A Maroinata i Masto^hda), Lewis N. and R. Kp., p. 2«, 2, f. 1, from photo. Charleston, South CaroWiia. Figs. 8, 9. " aRiKNUi.KRi, A. S.: Schm. At., 12, f. ;{5-87. C. " 10. '• vi'Li'iNA, (V H , 9, f. 18), a var. of N. acuta, K. B., 3, f. 69 ; Sm. Sp.. Xo. 240. Lake Michigan. " 11. SfRiHRLLA N'onii.i.si, X. S. Sporanglal form, S. B. I)., 8, f. »)3.=s Siir. splendida, var. Lake Michigan. 12. Cos<;iNODi8y |{ailey. (Jym. gihha. Griinow calls the same diatoms Knci/onema triiinyulare. Figs. t 1 'hit. .CXI i I'i! PTiATE CXIl. Flirnros mmcntlled ri(H» diameters. KiK. 1. a 2_ (1 8. FiK-< 4, Ki«. (J. i< 7. i( s. K 9. ■ ( 10. i( n". it 12. (1 13. (1 14. >( 15. Amphu'LEItra maxima, W. and (Ihase, 2, f. 5. Oreuoii. MKF.Of